mirror of
https://github.com/privatevoid-net/nix-super.git
synced 2024-11-22 05:56:15 +02:00
Merge pull request #9177 from edolstra/input-accessors
Backport FSInputAccessor and MemoryInputAccessor from lazy-trees
This commit is contained in:
Eelco Dolstra
GitHub
commit
955bbe53c5
31 changed files with 861 additions and 312 deletions
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@ -2,7 +2,7 @@ let
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inherit (builtins)
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attrNames attrValues fromJSON listToAttrs mapAttrs groupBy
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concatStringsSep concatMap length lessThan replaceStrings sort;
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inherit (import ./utils.nix) attrsToList concatStrings optionalString filterAttrs trim squash unique;
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inherit (import <nix/utils.nix>) attrsToList concatStrings optionalString filterAttrs trim squash unique;
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showStoreDocs = import ./generate-store-info.nix;
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in
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@ -32,7 +32,7 @@ dummy-env = env -i \
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NIX_STATE_DIR=/dummy \
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NIX_CONFIG='cores = 0'
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nix-eval = $(dummy-env) $(bindir)/nix eval --experimental-features nix-command -I nix/corepkgs=corepkgs --store dummy:// --impure --raw
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nix-eval = $(dummy-env) $(bindir)/nix eval --experimental-features nix-command -I nix=doc/manual --store dummy:// --impure --raw
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# re-implement mdBook's include directive to make it usable for terminal output and for proper @docroot@ substitution
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define process-includes
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@ -125,7 +125,7 @@ $(d)/src/command-ref/experimental-features-shortlist.md: $(d)/xp-features.json $
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@mv $@.tmp $@
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$(d)/xp-features.json: $(bindir)/nix
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$(trace-gen) $(dummy-env) NIX_PATH=nix/corepkgs=corepkgs $(bindir)/nix __dump-xp-features > $@.tmp
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$(trace-gen) $(dummy-env) $(bindir)/nix __dump-xp-features > $@.tmp
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@mv $@.tmp $@
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$(d)/src/language/builtins.md: $(d)/language.json $(d)/generate-builtins.nix $(d)/src/language/builtins-prefix.md $(bindir)/nix
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@ -141,7 +141,7 @@ $(d)/src/language/builtin-constants.md: $(d)/language.json $(d)/generate-builtin
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@mv $@.tmp $@
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$(d)/language.json: $(bindir)/nix
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$(trace-gen) $(dummy-env) NIX_PATH=nix/corepkgs=corepkgs $(bindir)/nix __dump-language > $@.tmp
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$(trace-gen) $(dummy-env) $(bindir)/nix __dump-language > $@.tmp
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@mv $@.tmp $@
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# Generate the HTML manual.
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@ -132,7 +132,7 @@ std::pair<SourcePath, uint32_t> findPackageFilename(EvalState & state, Value & v
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if (colon == std::string::npos) fail();
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std::string filename(fn, 0, colon);
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auto lineno = std::stoi(std::string(fn, colon + 1, std::string::npos));
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return {CanonPath(fn.substr(0, colon)), lineno};
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return {SourcePath{path.accessor, CanonPath(fn.substr(0, colon))}, lineno};
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} catch (std::invalid_argument & e) {
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fail();
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abort();
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@ -12,6 +12,8 @@
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#include "function-trace.hh"
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#include "profiles.hh"
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#include "print.hh"
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#include "fs-input-accessor.hh"
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#include "memory-input-accessor.hh"
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#include <algorithm>
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#include <chrono>
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@ -503,7 +505,17 @@ EvalState::EvalState(
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, sOutputSpecified(symbols.create("outputSpecified"))
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, repair(NoRepair)
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, emptyBindings(0)
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, derivationInternal(rootPath(CanonPath("/builtin/derivation.nix")))
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, rootFS(makeFSInputAccessor(CanonPath::root))
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, corepkgsFS(makeMemoryInputAccessor())
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, internalFS(makeMemoryInputAccessor())
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, derivationInternal{corepkgsFS->addFile(
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CanonPath("derivation-internal.nix"),
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#include "primops/derivation.nix.gen.hh"
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)}
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, callFlakeInternal{internalFS->addFile(
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CanonPath("call-flake.nix"),
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#include "flake/call-flake.nix.gen.hh"
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)}
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, store(store)
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, buildStore(buildStore ? buildStore : store)
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, debugRepl(nullptr)
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@ -555,6 +567,11 @@ EvalState::EvalState(
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}
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}
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corepkgsFS->addFile(
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CanonPath("fetchurl.nix"),
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#include "fetchurl.nix.gen.hh"
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);
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createBaseEnv();
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}
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@ -585,6 +602,9 @@ void EvalState::allowAndSetStorePathString(const StorePath & storePath, Value &
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SourcePath EvalState::checkSourcePath(const SourcePath & path_)
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{
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// Don't check non-rootFS accessors, they're in a different namespace.
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if (path_.accessor != ref<InputAccessor>(rootFS)) return path_;
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if (!allowedPaths) return path_;
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auto i = resolvedPaths.find(path_.path.abs());
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@ -599,8 +619,6 @@ SourcePath EvalState::checkSourcePath(const SourcePath & path_)
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*/
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Path abspath = canonPath(path_.path.abs());
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if (hasPrefix(abspath, corepkgsPrefix)) return CanonPath(abspath);
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for (auto & i : *allowedPaths) {
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if (isDirOrInDir(abspath, i)) {
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found = true;
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@ -617,7 +635,7 @@ SourcePath EvalState::checkSourcePath(const SourcePath & path_)
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/* Resolve symlinks. */
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debug("checking access to '%s'", abspath);
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SourcePath path = CanonPath(canonPath(abspath, true));
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SourcePath path = rootPath(CanonPath(canonPath(abspath, true)));
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for (auto & i : *allowedPaths) {
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if (isDirOrInDir(path.path.abs(), i)) {
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@ -649,12 +667,12 @@ void EvalState::checkURI(const std::string & uri)
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/* If the URI is a path, then check it against allowedPaths as
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well. */
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if (hasPrefix(uri, "/")) {
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checkSourcePath(CanonPath(uri));
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checkSourcePath(rootPath(CanonPath(uri)));
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return;
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}
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if (hasPrefix(uri, "file://")) {
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checkSourcePath(CanonPath(std::string(uri, 7)));
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checkSourcePath(rootPath(CanonPath(std::string(uri, 7))));
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return;
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}
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@ -950,7 +968,7 @@ void Value::mkStringMove(const char * s, const NixStringContext & context)
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void Value::mkPath(const SourcePath & path)
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{
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mkPath(makeImmutableString(path.path.abs()));
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mkPath(&*path.accessor, makeImmutableString(path.path.abs()));
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}
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@ -1165,24 +1183,6 @@ void EvalState::evalFile(const SourcePath & path_, Value & v, bool mustBeTrivial
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if (!e)
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e = parseExprFromFile(checkSourcePath(resolvedPath));
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cacheFile(path, resolvedPath, e, v, mustBeTrivial);
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}
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void EvalState::resetFileCache()
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{
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fileEvalCache.clear();
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fileParseCache.clear();
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}
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void EvalState::cacheFile(
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const SourcePath & path,
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const SourcePath & resolvedPath,
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Expr * e,
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Value & v,
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bool mustBeTrivial)
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{
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fileParseCache[resolvedPath] = e;
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try {
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@ -1211,6 +1211,13 @@ void EvalState::cacheFile(
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}
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void EvalState::resetFileCache()
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{
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fileEvalCache.clear();
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fileParseCache.clear();
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}
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void EvalState::eval(Expr * e, Value & v)
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{
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e->eval(*this, baseEnv, v);
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@ -2037,7 +2044,7 @@ void ExprConcatStrings::eval(EvalState & state, Env & env, Value & v)
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else if (firstType == nPath) {
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if (!context.empty())
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state.error("a string that refers to a store path cannot be appended to a path").atPos(pos).withFrame(env, *this).debugThrow<EvalError>();
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v.mkPath(CanonPath(canonPath(str())));
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v.mkPath(state.rootPath(CanonPath(canonPath(str()))));
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} else
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v.mkStringMove(c_str(), context);
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}
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@ -2236,7 +2243,7 @@ BackedStringView EvalState::coerceToString(
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!canonicalizePath && !copyToStore
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? // FIXME: hack to preserve path literals that end in a
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// slash, as in /foo/${x}.
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v._path
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v._path.path
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: copyToStore
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? store->printStorePath(copyPathToStore(context, v.path()))
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: std::string(v.path().path.abs());
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@ -2310,7 +2317,7 @@ StorePath EvalState::copyPathToStore(NixStringContext & context, const SourcePat
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auto dstPath = i != srcToStore.end()
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? i->second
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: [&]() {
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auto dstPath = path.fetchToStore(store, path.baseName(), nullptr, repair);
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auto dstPath = path.fetchToStore(store, path.baseName(), FileIngestionMethod::Recursive, nullptr, repair);
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allowPath(dstPath);
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srcToStore.insert_or_assign(path, dstPath);
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printMsg(lvlChatty, "copied source '%1%' -> '%2%'", path, store->printStorePath(dstPath));
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@ -2326,10 +2333,34 @@ StorePath EvalState::copyPathToStore(NixStringContext & context, const SourcePat
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SourcePath EvalState::coerceToPath(const PosIdx pos, Value & v, NixStringContext & context, std::string_view errorCtx)
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{
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try {
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forceValue(v, pos);
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} catch (Error & e) {
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e.addTrace(positions[pos], errorCtx);
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throw;
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}
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/* Handle path values directly, without coercing to a string. */
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if (v.type() == nPath)
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return v.path();
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/* Similarly, handle __toString where the result may be a path
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value. */
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if (v.type() == nAttrs) {
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auto i = v.attrs->find(sToString);
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if (i != v.attrs->end()) {
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Value v1;
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callFunction(*i->value, v, v1, pos);
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return coerceToPath(pos, v1, context, errorCtx);
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}
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}
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/* Any other value should be coercable to a string, interpreted
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relative to the root filesystem. */
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auto path = coerceToString(pos, v, context, errorCtx, false, false, true).toOwned();
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if (path == "" || path[0] != '/')
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error("string '%1%' doesn't represent an absolute path", path).withTrace(pos, errorCtx).debugThrow<EvalError>();
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return CanonPath(path);
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return rootPath(CanonPath(path));
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}
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@ -2429,7 +2460,10 @@ bool EvalState::eqValues(Value & v1, Value & v2, const PosIdx pos, std::string_v
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return v1.string_view().compare(v2.string_view()) == 0;
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case nPath:
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return strcmp(v1._path, v2._path) == 0;
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return
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// FIXME: compare accessors by their fingerprint.
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v1._path.accessor == v2._path.accessor
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&& strcmp(v1._path.path, v2._path.path) == 0;
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case nNull:
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return true;
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@ -24,6 +24,8 @@ class EvalState;
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class StorePath;
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struct SingleDerivedPath;
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enum RepairFlag : bool;
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struct FSInputAccessor;
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struct MemoryInputAccessor;
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/**
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@ -211,8 +213,26 @@ public:
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Bindings emptyBindings;
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/**
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* The accessor for the root filesystem.
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*/
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const ref<FSInputAccessor> rootFS;
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/**
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* The in-memory filesystem for <nix/...> paths.
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*/
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const ref<MemoryInputAccessor> corepkgsFS;
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/**
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* In-memory filesystem for internal, non-user-callable Nix
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* expressions like call-flake.nix.
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*/
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const ref<MemoryInputAccessor> internalFS;
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const SourcePath derivationInternal;
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const SourcePath callFlakeInternal;
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/**
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* Store used to materialise .drv files.
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*/
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@ -223,7 +243,6 @@ public:
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*/
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const ref<Store> buildStore;
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RootValue vCallFlake = nullptr;
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RootValue vImportedDrvToDerivation = nullptr;
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/**
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@ -405,16 +424,6 @@ public:
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*/
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void evalFile(const SourcePath & path, Value & v, bool mustBeTrivial = false);
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/**
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* Like `evalFile`, but with an already parsed expression.
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*/
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void cacheFile(
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const SourcePath & path,
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const SourcePath & resolvedPath,
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Expr * e,
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Value & v,
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bool mustBeTrivial = false);
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void resetFileCache();
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/**
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@ -424,7 +433,7 @@ public:
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SourcePath findFile(const SearchPath & searchPath, const std::string_view path, const PosIdx pos = noPos);
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/**
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* Try to resolve a search path value (not the optinal key part)
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* Try to resolve a search path value (not the optional key part)
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*
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* If the specified search path element is a URI, download it.
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*
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@ -829,8 +838,6 @@ struct InvalidPathError : EvalError
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#endif
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};
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static const std::string corepkgsPrefix{"/__corepkgs__/"};
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template<class ErrorType>
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void ErrorBuilder::debugThrow()
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{
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|
|
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@ -223,9 +223,9 @@ static Flake getFlake(
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throw Error("source tree referenced by '%s' does not contain a '%s/flake.nix' file", lockedRef, lockedRef.subdir);
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Value vInfo;
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state.evalFile(CanonPath(flakeFile), vInfo, true); // FIXME: symlink attack
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state.evalFile(state.rootPath(CanonPath(flakeFile)), vInfo, true); // FIXME: symlink attack
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expectType(state, nAttrs, vInfo, state.positions.add({CanonPath(flakeFile)}, 1, 1));
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expectType(state, nAttrs, vInfo, state.positions.add({state.rootPath(CanonPath(flakeFile))}, 1, 1));
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if (auto description = vInfo.attrs->get(state.sDescription)) {
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expectType(state, nString, *description->value, description->pos);
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@ -737,14 +737,10 @@ void callFlake(EvalState & state,
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vRootSubdir->mkString(lockedFlake.flake.lockedRef.subdir);
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if (!state.vCallFlake) {
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state.vCallFlake = allocRootValue(state.allocValue());
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state.eval(state.parseExprFromString(
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#include "call-flake.nix.gen.hh"
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, CanonPath::root), **state.vCallFlake);
|
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}
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auto vCallFlake = state.allocValue();
|
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state.evalFile(state.callFlakeInternal, *vCallFlake);
|
||||
|
||||
state.callFunction(**state.vCallFlake, *vLocks, *vTmp1, noPos);
|
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state.callFunction(*vCallFlake, *vLocks, *vTmp1, noPos);
|
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state.callFunction(*vTmp1, *vRootSrc, *vTmp2, noPos);
|
||||
state.callFunction(*vTmp2, *vRootSubdir, vRes, noPos);
|
||||
}
|
||||
|
|
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|||
|
|
@ -20,7 +20,6 @@ MakeError(Abort, EvalError);
|
|||
MakeError(TypeError, EvalError);
|
||||
MakeError(UndefinedVarError, Error);
|
||||
MakeError(MissingArgumentError, EvalError);
|
||||
MakeError(RestrictedPathError, Error);
|
||||
|
||||
/**
|
||||
* Position objects.
|
||||
|
|
@ -200,9 +199,13 @@ struct ExprString : Expr
|
|||
|
||||
struct ExprPath : Expr
|
||||
{
|
||||
ref<InputAccessor> accessor;
|
||||
std::string s;
|
||||
Value v;
|
||||
ExprPath(std::string s) : s(std::move(s)) { v.mkPath(this->s.c_str()); };
|
||||
ExprPath(ref<InputAccessor> accessor, std::string s) : accessor(accessor), s(std::move(s))
|
||||
{
|
||||
v.mkPath(&*accessor, this->s.c_str());
|
||||
}
|
||||
Value * maybeThunk(EvalState & state, Env & env) override;
|
||||
COMMON_METHODS
|
||||
};
|
||||
|
|
|
|||
|
|
@ -520,7 +520,7 @@ path_start
|
|||
/* add back in the trailing '/' to the first segment */
|
||||
if ($1.p[$1.l-1] == '/' && $1.l > 1)
|
||||
path += "/";
|
||||
$$ = new ExprPath(std::move(path));
|
||||
$$ = new ExprPath(ref<InputAccessor>(data->state.rootFS), std::move(path));
|
||||
}
|
||||
| HPATH {
|
||||
if (evalSettings.pureEval) {
|
||||
|
|
@ -530,7 +530,7 @@ path_start
|
|||
);
|
||||
}
|
||||
Path path(getHome() + std::string($1.p + 1, $1.l - 1));
|
||||
$$ = new ExprPath(std::move(path));
|
||||
$$ = new ExprPath(ref<InputAccessor>(data->state.rootFS), std::move(path));
|
||||
}
|
||||
;
|
||||
|
||||
|
|
@ -649,6 +649,8 @@ formal
|
|||
#include "tarball.hh"
|
||||
#include "store-api.hh"
|
||||
#include "flake/flake.hh"
|
||||
#include "fs-input-accessor.hh"
|
||||
#include "memory-input-accessor.hh"
|
||||
|
||||
|
||||
namespace nix {
|
||||
|
|
@ -756,11 +758,11 @@ SourcePath EvalState::findFile(const SearchPath & searchPath, const std::string_
|
|||
auto r = *rOpt;
|
||||
|
||||
Path res = suffix == "" ? r : concatStrings(r, "/", suffix);
|
||||
if (pathExists(res)) return CanonPath(canonPath(res));
|
||||
if (pathExists(res)) return rootPath(CanonPath(canonPath(res)));
|
||||
}
|
||||
|
||||
if (hasPrefix(path, "nix/"))
|
||||
return CanonPath(concatStrings(corepkgsPrefix, path.substr(4)));
|
||||
return {corepkgsFS, CanonPath(path.substr(3))};
|
||||
|
||||
debugThrow(ThrownError({
|
||||
.msg = hintfmt(evalSettings.pureEval
|
||||
|
|
|
|||
|
|
@ -1,10 +1,11 @@
|
|||
#include "eval.hh"
|
||||
#include "fs-input-accessor.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
SourcePath EvalState::rootPath(CanonPath path)
|
||||
{
|
||||
return path;
|
||||
return {rootFS, std::move(path)};
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -121,13 +121,15 @@ static SourcePath realisePath(EvalState & state, const PosIdx pos, Value & v, co
|
|||
auto path = state.coerceToPath(noPos, v, context, "while realising the context of a path");
|
||||
|
||||
try {
|
||||
StringMap rewrites = state.realiseContext(context);
|
||||
|
||||
auto realPath = state.rootPath(CanonPath(state.toRealPath(rewriteStrings(path.path.abs(), rewrites), context)));
|
||||
if (!context.empty()) {
|
||||
auto rewrites = state.realiseContext(context);
|
||||
auto realPath = state.toRealPath(rewriteStrings(path.path.abs(), rewrites), context);
|
||||
return {path.accessor, CanonPath(realPath)};
|
||||
}
|
||||
|
||||
return flags.checkForPureEval
|
||||
? state.checkSourcePath(realPath)
|
||||
: realPath;
|
||||
? state.checkSourcePath(path)
|
||||
: path;
|
||||
} catch (Error & e) {
|
||||
e.addTrace(state.positions[pos], "while realising the context of path '%s'", path);
|
||||
throw;
|
||||
|
|
@ -202,7 +204,7 @@ static void import(EvalState & state, const PosIdx pos, Value & vPath, Value * v
|
|||
state.vImportedDrvToDerivation = allocRootValue(state.allocValue());
|
||||
state.eval(state.parseExprFromString(
|
||||
#include "imported-drv-to-derivation.nix.gen.hh"
|
||||
, CanonPath::root), **state.vImportedDrvToDerivation);
|
||||
, state.rootPath(CanonPath::root)), **state.vImportedDrvToDerivation);
|
||||
}
|
||||
|
||||
state.forceFunction(**state.vImportedDrvToDerivation, pos, "while evaluating imported-drv-to-derivation.nix.gen.hh");
|
||||
|
|
@ -210,12 +212,6 @@ static void import(EvalState & state, const PosIdx pos, Value & vPath, Value * v
|
|||
state.forceAttrs(v, pos, "while calling imported-drv-to-derivation.nix.gen.hh");
|
||||
}
|
||||
|
||||
else if (path2 == corepkgsPrefix + "fetchurl.nix") {
|
||||
state.eval(state.parseExprFromString(
|
||||
#include "fetchurl.nix.gen.hh"
|
||||
, CanonPath::root), v);
|
||||
}
|
||||
|
||||
else {
|
||||
if (!vScope)
|
||||
state.evalFile(path, v);
|
||||
|
|
@ -599,7 +595,10 @@ struct CompareValues
|
|||
case nString:
|
||||
return v1->string_view().compare(v2->string_view()) < 0;
|
||||
case nPath:
|
||||
return strcmp(v1->_path, v2->_path) < 0;
|
||||
// Note: we don't take the accessor into account
|
||||
// since it's not obvious how to compare them in a
|
||||
// reproducible way.
|
||||
return strcmp(v1->_path.path, v2->_path.path) < 0;
|
||||
case nList:
|
||||
// Lexicographic comparison
|
||||
for (size_t i = 0;; i++) {
|
||||
|
|
@ -1493,7 +1492,7 @@ static void prim_storePath(EvalState & state, const PosIdx pos, Value * * args,
|
|||
}));
|
||||
|
||||
NixStringContext context;
|
||||
auto path = state.checkSourcePath(state.coerceToPath(pos, *args[0], context, "while evaluating the first argument passed to builtins.storePath")).path;
|
||||
auto path = state.checkSourcePath(state.coerceToPath(pos, *args[0], context, "while evaluating the first argument passed to 'builtins.storePath'")).path;
|
||||
/* Resolve symlinks in ‘path’, unless ‘path’ itself is a symlink
|
||||
directly in the store. The latter condition is necessary so
|
||||
e.g. nix-push does the right thing. */
|
||||
|
|
@ -2211,7 +2210,7 @@ static void addPath(
|
|||
|
||||
path = evalSettings.pureEval && expectedHash
|
||||
? path
|
||||
: state.checkSourcePath(CanonPath(path)).path.abs();
|
||||
: state.checkSourcePath(state.rootPath(CanonPath(path))).path.abs();
|
||||
|
||||
PathFilter filter = filterFun ? ([&](const Path & path) {
|
||||
auto st = lstat(path);
|
||||
|
|
@ -2244,9 +2243,7 @@ static void addPath(
|
|||
});
|
||||
|
||||
if (!expectedHash || !state.store->isValidPath(*expectedStorePath)) {
|
||||
StorePath dstPath = settings.readOnlyMode
|
||||
? state.store->computeStorePathForPath(name, path, method, htSHA256, filter).first
|
||||
: state.store->addToStore(name, path, method, htSHA256, filter, state.repair, refs);
|
||||
auto dstPath = state.rootPath(CanonPath(path)).fetchToStore(state.store, name, method, &filter, state.repair);
|
||||
if (expectedHash && expectedStorePath != dstPath)
|
||||
state.debugThrowLastTrace(Error("store path mismatch in (possibly filtered) path added from '%s'", path));
|
||||
state.allowAndSetStorePathString(dstPath, v);
|
||||
|
|
@ -2263,7 +2260,7 @@ static void prim_filterSource(EvalState & state, const PosIdx pos, Value * * arg
|
|||
{
|
||||
NixStringContext context;
|
||||
auto path = state.coerceToPath(pos, *args[1], context,
|
||||
"while evaluating the second argument (the path to filter) passed to builtins.filterSource");
|
||||
"while evaluating the second argument (the path to filter) passed to 'builtins.filterSource'");
|
||||
state.forceFunction(*args[0], pos, "while evaluating the first argument passed to builtins.filterSource");
|
||||
addPath(state, pos, path.baseName(), path.path.abs(), args[0], FileIngestionMethod::Recursive, std::nullopt, v, context);
|
||||
}
|
||||
|
|
@ -4545,12 +4542,7 @@ void EvalState::createBaseEnv()
|
|||
|
||||
/* Note: we have to initialize the 'derivation' constant *after*
|
||||
building baseEnv/staticBaseEnv because it uses 'builtins'. */
|
||||
char code[] =
|
||||
#include "primops/derivation.nix.gen.hh"
|
||||
// the parser needs two NUL bytes as terminators; one of them
|
||||
// is implied by being a C string.
|
||||
"\0";
|
||||
eval(parse(code, sizeof(code), derivationInternal, {CanonPath::root}, staticBaseEnv), *vDerivation);
|
||||
evalFile(derivationInternal, *vDerivation);
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -310,7 +310,7 @@ namespace nix {
|
|||
ASSERT_TRACE2("storePath true",
|
||||
TypeError,
|
||||
hintfmt("cannot coerce %s to a string", "a Boolean"),
|
||||
hintfmt("while evaluating the first argument passed to builtins.storePath"));
|
||||
hintfmt("while evaluating the first argument passed to 'builtins.storePath'"));
|
||||
|
||||
}
|
||||
|
||||
|
|
@ -378,12 +378,12 @@ namespace nix {
|
|||
ASSERT_TRACE2("filterSource [] []",
|
||||
TypeError,
|
||||
hintfmt("cannot coerce %s to a string", "a list"),
|
||||
hintfmt("while evaluating the second argument (the path to filter) passed to builtins.filterSource"));
|
||||
hintfmt("while evaluating the second argument (the path to filter) passed to 'builtins.filterSource'"));
|
||||
|
||||
ASSERT_TRACE2("filterSource [] \"foo\"",
|
||||
EvalError,
|
||||
hintfmt("string '%s' doesn't represent an absolute path", "foo"),
|
||||
hintfmt("while evaluating the second argument (the path to filter) passed to builtins.filterSource"));
|
||||
hintfmt("while evaluating the second argument (the path to filter) passed to 'builtins.filterSource'"));
|
||||
|
||||
ASSERT_TRACE2("filterSource [] ./.",
|
||||
TypeError,
|
||||
|
|
|
|||
|
|
@ -62,7 +62,7 @@ namespace nix {
|
|||
// not supported by store 'dummy'" thrown in the test body.
|
||||
TEST_F(JSONValueTest, DISABLED_Path) {
|
||||
Value v;
|
||||
v.mkPath("test");
|
||||
v.mkPath(state.rootPath(CanonPath("/test")));
|
||||
ASSERT_EQ(getJSONValue(v), "\"/nix/store/g1w7hy3qg1w7hy3qg1w7hy3qg1w7hy3q-x\"");
|
||||
}
|
||||
} /* namespace nix */
|
||||
|
|
|
|||
|
|
@ -103,14 +103,17 @@ namespace nix {
|
|||
}
|
||||
|
||||
MATCHER_P(IsPathEq, p, fmt("Is a path equal to \"%1%\"", p)) {
|
||||
if (arg.type() != nPath) {
|
||||
*result_listener << "Expected a path got " << arg.type();
|
||||
return false;
|
||||
} else if (std::string_view(arg._path) != p) {
|
||||
*result_listener << "Expected a path that equals \"" << p << "\" but got: " << arg.c_str();
|
||||
if (arg.type() != nPath) {
|
||||
*result_listener << "Expected a path got " << arg.type();
|
||||
return false;
|
||||
} else {
|
||||
auto path = arg.path();
|
||||
if (path.path != CanonPath(p)) {
|
||||
*result_listener << "Expected a path that equals \"" << p << "\" but got: " << path.path;
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -189,7 +189,12 @@ public:
|
|||
const char * c_str;
|
||||
const char * * context; // must be in sorted order
|
||||
} string;
|
||||
const char * _path;
|
||||
|
||||
struct {
|
||||
InputAccessor * accessor;
|
||||
const char * path;
|
||||
} _path;
|
||||
|
||||
Bindings * attrs;
|
||||
struct {
|
||||
size_t size;
|
||||
|
|
@ -286,11 +291,12 @@ public:
|
|||
|
||||
void mkPath(const SourcePath & path);
|
||||
|
||||
inline void mkPath(const char * path)
|
||||
inline void mkPath(InputAccessor * accessor, const char * path)
|
||||
{
|
||||
clearValue();
|
||||
internalType = tPath;
|
||||
_path = path;
|
||||
_path.accessor = accessor;
|
||||
_path.path = path;
|
||||
}
|
||||
|
||||
inline void mkNull()
|
||||
|
|
@ -437,7 +443,10 @@ public:
|
|||
SourcePath path() const
|
||||
{
|
||||
assert(internalType == tPath);
|
||||
return SourcePath{CanonPath(_path)};
|
||||
return SourcePath {
|
||||
.accessor = ref(_path.accessor->shared_from_this()),
|
||||
.path = CanonPath(CanonPath::unchecked_t(), _path.path)
|
||||
};
|
||||
}
|
||||
|
||||
std::string_view string_view() const
|
||||
|
|
|
|||
130
src/libfetchers/fs-input-accessor.cc
Normal file
130
src/libfetchers/fs-input-accessor.cc
Normal file
|
|
@ -0,0 +1,130 @@
|
|||
#include "fs-input-accessor.hh"
|
||||
#include "posix-source-accessor.hh"
|
||||
#include "store-api.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
struct FSInputAccessorImpl : FSInputAccessor, PosixSourceAccessor
|
||||
{
|
||||
CanonPath root;
|
||||
std::optional<std::set<CanonPath>> allowedPaths;
|
||||
MakeNotAllowedError makeNotAllowedError;
|
||||
|
||||
FSInputAccessorImpl(
|
||||
const CanonPath & root,
|
||||
std::optional<std::set<CanonPath>> && allowedPaths,
|
||||
MakeNotAllowedError && makeNotAllowedError)
|
||||
: root(root)
|
||||
, allowedPaths(std::move(allowedPaths))
|
||||
, makeNotAllowedError(std::move(makeNotAllowedError))
|
||||
{
|
||||
}
|
||||
|
||||
void readFile(
|
||||
const CanonPath & path,
|
||||
Sink & sink,
|
||||
std::function<void(uint64_t)> sizeCallback) override
|
||||
{
|
||||
auto absPath = makeAbsPath(path);
|
||||
checkAllowed(absPath);
|
||||
PosixSourceAccessor::readFile(absPath, sink, sizeCallback);
|
||||
}
|
||||
|
||||
bool pathExists(const CanonPath & path) override
|
||||
{
|
||||
auto absPath = makeAbsPath(path);
|
||||
return isAllowed(absPath) && PosixSourceAccessor::pathExists(absPath);
|
||||
}
|
||||
|
||||
Stat lstat(const CanonPath & path) override
|
||||
{
|
||||
auto absPath = makeAbsPath(path);
|
||||
checkAllowed(absPath);
|
||||
return PosixSourceAccessor::lstat(absPath);
|
||||
}
|
||||
|
||||
DirEntries readDirectory(const CanonPath & path) override
|
||||
{
|
||||
auto absPath = makeAbsPath(path);
|
||||
checkAllowed(absPath);
|
||||
DirEntries res;
|
||||
for (auto & entry : PosixSourceAccessor::readDirectory(absPath))
|
||||
if (isAllowed(absPath + entry.first))
|
||||
res.emplace(entry);
|
||||
return res;
|
||||
}
|
||||
|
||||
std::string readLink(const CanonPath & path) override
|
||||
{
|
||||
auto absPath = makeAbsPath(path);
|
||||
checkAllowed(absPath);
|
||||
return PosixSourceAccessor::readLink(absPath);
|
||||
}
|
||||
|
||||
CanonPath makeAbsPath(const CanonPath & path)
|
||||
{
|
||||
return root + path;
|
||||
}
|
||||
|
||||
void checkAllowed(const CanonPath & absPath) override
|
||||
{
|
||||
if (!isAllowed(absPath))
|
||||
throw makeNotAllowedError
|
||||
? makeNotAllowedError(absPath)
|
||||
: RestrictedPathError("access to path '%s' is forbidden", absPath);
|
||||
}
|
||||
|
||||
bool isAllowed(const CanonPath & absPath)
|
||||
{
|
||||
if (!absPath.isWithin(root))
|
||||
return false;
|
||||
|
||||
if (allowedPaths) {
|
||||
auto p = absPath.removePrefix(root);
|
||||
if (!p.isAllowed(*allowedPaths))
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
void allowPath(CanonPath path) override
|
||||
{
|
||||
if (allowedPaths)
|
||||
allowedPaths->insert(std::move(path));
|
||||
}
|
||||
|
||||
bool hasAccessControl() override
|
||||
{
|
||||
return (bool) allowedPaths;
|
||||
}
|
||||
|
||||
std::optional<CanonPath> getPhysicalPath(const CanonPath & path) override
|
||||
{
|
||||
return makeAbsPath(path);
|
||||
}
|
||||
};
|
||||
|
||||
ref<FSInputAccessor> makeFSInputAccessor(
|
||||
const CanonPath & root,
|
||||
std::optional<std::set<CanonPath>> && allowedPaths,
|
||||
MakeNotAllowedError && makeNotAllowedError)
|
||||
{
|
||||
return make_ref<FSInputAccessorImpl>(root, std::move(allowedPaths), std::move(makeNotAllowedError));
|
||||
}
|
||||
|
||||
ref<FSInputAccessor> makeStorePathAccessor(
|
||||
ref<Store> store,
|
||||
const StorePath & storePath,
|
||||
MakeNotAllowedError && makeNotAllowedError)
|
||||
{
|
||||
return makeFSInputAccessor(CanonPath(store->toRealPath(storePath)), {}, std::move(makeNotAllowedError));
|
||||
}
|
||||
|
||||
SourcePath getUnfilteredRootPath(CanonPath path)
|
||||
{
|
||||
static auto rootFS = makeFSInputAccessor(CanonPath::root);
|
||||
return {rootFS, path};
|
||||
}
|
||||
|
||||
}
|
||||
33
src/libfetchers/fs-input-accessor.hh
Normal file
33
src/libfetchers/fs-input-accessor.hh
Normal file
|
|
@ -0,0 +1,33 @@
|
|||
#pragma once
|
||||
|
||||
#include "input-accessor.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
class StorePath;
|
||||
class Store;
|
||||
|
||||
struct FSInputAccessor : InputAccessor
|
||||
{
|
||||
virtual void checkAllowed(const CanonPath & absPath) = 0;
|
||||
|
||||
virtual void allowPath(CanonPath path) = 0;
|
||||
|
||||
virtual bool hasAccessControl() = 0;
|
||||
};
|
||||
|
||||
typedef std::function<RestrictedPathError(const CanonPath & path)> MakeNotAllowedError;
|
||||
|
||||
ref<FSInputAccessor> makeFSInputAccessor(
|
||||
const CanonPath & root,
|
||||
std::optional<std::set<CanonPath>> && allowedPaths = {},
|
||||
MakeNotAllowedError && makeNotAllowedError = {});
|
||||
|
||||
ref<FSInputAccessor> makeStorePathAccessor(
|
||||
ref<Store> store,
|
||||
const StorePath & storePath,
|
||||
MakeNotAllowedError && makeNotAllowedError = {});
|
||||
|
||||
SourcePath getUnfilteredRootPath(CanonPath path);
|
||||
|
||||
}
|
||||
|
|
@ -3,12 +3,52 @@
|
|||
|
||||
namespace nix {
|
||||
|
||||
StorePath InputAccessor::fetchToStore(
|
||||
ref<Store> store,
|
||||
const CanonPath & path,
|
||||
std::string_view name,
|
||||
FileIngestionMethod method,
|
||||
PathFilter * filter,
|
||||
RepairFlag repair)
|
||||
{
|
||||
Activity act(*logger, lvlChatty, actUnknown, fmt("copying '%s' to the store", showPath(path)));
|
||||
|
||||
auto source = sinkToSource([&](Sink & sink) {
|
||||
if (method == FileIngestionMethod::Recursive)
|
||||
dumpPath(path, sink, filter ? *filter : defaultPathFilter);
|
||||
else
|
||||
readFile(path, sink);
|
||||
});
|
||||
|
||||
auto storePath =
|
||||
settings.readOnlyMode
|
||||
? store->computeStorePathFromDump(*source, name, method, htSHA256).first
|
||||
: store->addToStoreFromDump(*source, name, method, htSHA256, repair);
|
||||
|
||||
return storePath;
|
||||
}
|
||||
|
||||
SourcePath InputAccessor::root()
|
||||
{
|
||||
return {ref(shared_from_this()), CanonPath::root};
|
||||
}
|
||||
|
||||
std::ostream & operator << (std::ostream & str, const SourcePath & path)
|
||||
{
|
||||
str << path.to_string();
|
||||
return str;
|
||||
}
|
||||
|
||||
StorePath SourcePath::fetchToStore(
|
||||
ref<Store> store,
|
||||
std::string_view name,
|
||||
FileIngestionMethod method,
|
||||
PathFilter * filter,
|
||||
RepairFlag repair) const
|
||||
{
|
||||
return accessor->fetchToStore(store, path, name, method, filter, repair);
|
||||
}
|
||||
|
||||
std::string_view SourcePath::baseName() const
|
||||
{
|
||||
return path.baseName().value_or("source");
|
||||
|
|
@ -18,60 +58,12 @@ SourcePath SourcePath::parent() const
|
|||
{
|
||||
auto p = path.parent();
|
||||
assert(p);
|
||||
return std::move(*p);
|
||||
}
|
||||
|
||||
InputAccessor::Stat SourcePath::lstat() const
|
||||
{
|
||||
auto st = nix::lstat(path.abs());
|
||||
return InputAccessor::Stat {
|
||||
.type =
|
||||
S_ISREG(st.st_mode) ? InputAccessor::tRegular :
|
||||
S_ISDIR(st.st_mode) ? InputAccessor::tDirectory :
|
||||
S_ISLNK(st.st_mode) ? InputAccessor::tSymlink :
|
||||
InputAccessor::tMisc,
|
||||
.isExecutable = S_ISREG(st.st_mode) && st.st_mode & S_IXUSR
|
||||
};
|
||||
}
|
||||
|
||||
std::optional<InputAccessor::Stat> SourcePath::maybeLstat() const
|
||||
{
|
||||
// FIXME: merge these into one operation.
|
||||
if (!pathExists())
|
||||
return {};
|
||||
return lstat();
|
||||
}
|
||||
|
||||
InputAccessor::DirEntries SourcePath::readDirectory() const
|
||||
{
|
||||
InputAccessor::DirEntries res;
|
||||
for (auto & entry : nix::readDirectory(path.abs())) {
|
||||
std::optional<InputAccessor::Type> type;
|
||||
switch (entry.type) {
|
||||
case DT_REG: type = InputAccessor::Type::tRegular; break;
|
||||
case DT_LNK: type = InputAccessor::Type::tSymlink; break;
|
||||
case DT_DIR: type = InputAccessor::Type::tDirectory; break;
|
||||
}
|
||||
res.emplace(entry.name, type);
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
StorePath SourcePath::fetchToStore(
|
||||
ref<Store> store,
|
||||
std::string_view name,
|
||||
PathFilter * filter,
|
||||
RepairFlag repair) const
|
||||
{
|
||||
return
|
||||
settings.readOnlyMode
|
||||
? store->computeStorePathForPath(name, path.abs(), FileIngestionMethod::Recursive, htSHA256, filter ? *filter : defaultPathFilter).first
|
||||
: store->addToStore(name, path.abs(), FileIngestionMethod::Recursive, htSHA256, filter ? *filter : defaultPathFilter, repair);
|
||||
return {accessor, std::move(*p)};
|
||||
}
|
||||
|
||||
SourcePath SourcePath::resolveSymlinks() const
|
||||
{
|
||||
SourcePath res(CanonPath::root);
|
||||
auto res = accessor->root();
|
||||
|
||||
int linksAllowed = 1024;
|
||||
|
||||
|
|
|
|||
|
|
@ -1,40 +1,39 @@
|
|||
#pragma once
|
||||
|
||||
#include "source-accessor.hh"
|
||||
#include "ref.hh"
|
||||
#include "types.hh"
|
||||
#include "archive.hh"
|
||||
#include "canon-path.hh"
|
||||
#include "repair-flag.hh"
|
||||
#include "content-address.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
MakeError(RestrictedPathError, Error);
|
||||
|
||||
struct SourcePath;
|
||||
class StorePath;
|
||||
class Store;
|
||||
|
||||
struct InputAccessor
|
||||
struct InputAccessor : SourceAccessor, std::enable_shared_from_this<InputAccessor>
|
||||
{
|
||||
enum Type {
|
||||
tRegular, tSymlink, tDirectory,
|
||||
/**
|
||||
Any other node types that may be encountered on the file system, such as device nodes, sockets, named pipe, and possibly even more exotic things.
|
||||
|
||||
Responsible for `"unknown"` from `builtins.readFileType "/dev/null"`.
|
||||
|
||||
Unlike `DT_UNKNOWN`, this must not be used for deferring the lookup of types.
|
||||
*/
|
||||
tMisc
|
||||
};
|
||||
|
||||
struct Stat
|
||||
/**
|
||||
* Return the maximum last-modified time of the files in this
|
||||
* tree, if available.
|
||||
*/
|
||||
virtual std::optional<time_t> getLastModified()
|
||||
{
|
||||
Type type = tMisc;
|
||||
//uint64_t fileSize = 0; // regular files only
|
||||
bool isExecutable = false; // regular files only
|
||||
};
|
||||
return std::nullopt;
|
||||
}
|
||||
|
||||
typedef std::optional<Type> DirEntry;
|
||||
StorePath fetchToStore(
|
||||
ref<Store> store,
|
||||
const CanonPath & path,
|
||||
std::string_view name = "source",
|
||||
FileIngestionMethod method = FileIngestionMethod::Recursive,
|
||||
PathFilter * filter = nullptr,
|
||||
RepairFlag repair = NoRepair);
|
||||
|
||||
typedef std::map<std::string, DirEntry> DirEntries;
|
||||
SourcePath root();
|
||||
};
|
||||
|
||||
/**
|
||||
|
|
@ -45,12 +44,9 @@ struct InputAccessor
|
|||
*/
|
||||
struct SourcePath
|
||||
{
|
||||
ref<InputAccessor> accessor;
|
||||
CanonPath path;
|
||||
|
||||
SourcePath(CanonPath path)
|
||||
: path(std::move(path))
|
||||
{ }
|
||||
|
||||
std::string_view baseName() const;
|
||||
|
||||
/**
|
||||
|
|
@ -64,39 +60,42 @@ struct SourcePath
|
|||
* return its contents; otherwise throw an error.
|
||||
*/
|
||||
std::string readFile() const
|
||||
{ return nix::readFile(path.abs()); }
|
||||
{ return accessor->readFile(path); }
|
||||
|
||||
/**
|
||||
* Return whether this `SourcePath` denotes a file (of any type)
|
||||
* that exists
|
||||
*/
|
||||
bool pathExists() const
|
||||
{ return nix::pathExists(path.abs()); }
|
||||
{ return accessor->pathExists(path); }
|
||||
|
||||
/**
|
||||
* Return stats about this `SourcePath`, or throw an exception if
|
||||
* it doesn't exist.
|
||||
*/
|
||||
InputAccessor::Stat lstat() const;
|
||||
InputAccessor::Stat lstat() const
|
||||
{ return accessor->lstat(path); }
|
||||
|
||||
/**
|
||||
* Return stats about this `SourcePath`, or std::nullopt if it
|
||||
* doesn't exist.
|
||||
*/
|
||||
std::optional<InputAccessor::Stat> maybeLstat() const;
|
||||
std::optional<InputAccessor::Stat> maybeLstat() const
|
||||
{ return accessor->maybeLstat(path); }
|
||||
|
||||
/**
|
||||
* If this `SourcePath` denotes a directory (not a symlink),
|
||||
* return its directory entries; otherwise throw an error.
|
||||
*/
|
||||
InputAccessor::DirEntries readDirectory() const;
|
||||
InputAccessor::DirEntries readDirectory() const
|
||||
{ return accessor->readDirectory(path); }
|
||||
|
||||
/**
|
||||
* If this `SourcePath` denotes a symlink, return its target;
|
||||
* otherwise throw an error.
|
||||
*/
|
||||
std::string readLink() const
|
||||
{ return nix::readLink(path.abs()); }
|
||||
{ return accessor->readLink(path); }
|
||||
|
||||
/**
|
||||
* Dump this `SourcePath` to `sink` as a NAR archive.
|
||||
|
|
@ -104,7 +103,7 @@ struct SourcePath
|
|||
void dumpPath(
|
||||
Sink & sink,
|
||||
PathFilter & filter = defaultPathFilter) const
|
||||
{ return nix::dumpPath(path.abs(), sink, filter); }
|
||||
{ return accessor->dumpPath(path, sink, filter); }
|
||||
|
||||
/**
|
||||
* Copy this `SourcePath` to the Nix store.
|
||||
|
|
@ -112,6 +111,7 @@ struct SourcePath
|
|||
StorePath fetchToStore(
|
||||
ref<Store> store,
|
||||
std::string_view name = "source",
|
||||
FileIngestionMethod method = FileIngestionMethod::Recursive,
|
||||
PathFilter * filter = nullptr,
|
||||
RepairFlag repair = NoRepair) const;
|
||||
|
||||
|
|
@ -120,7 +120,7 @@ struct SourcePath
|
|||
* it has a physical location.
|
||||
*/
|
||||
std::optional<CanonPath> getPhysicalPath() const
|
||||
{ return path; }
|
||||
{ return accessor->getPhysicalPath(path); }
|
||||
|
||||
std::string to_string() const
|
||||
{ return path.abs(); }
|
||||
|
|
@ -129,7 +129,7 @@ struct SourcePath
|
|||
* Append a `CanonPath` to this path.
|
||||
*/
|
||||
SourcePath operator + (const CanonPath & x) const
|
||||
{ return {path + x}; }
|
||||
{ return {accessor, path + x}; }
|
||||
|
||||
/**
|
||||
* Append a single component `c` to this path. `c` must not
|
||||
|
|
@ -137,21 +137,21 @@ struct SourcePath
|
|||
* and `c`.
|
||||
*/
|
||||
SourcePath operator + (std::string_view c) const
|
||||
{ return {path + c}; }
|
||||
{ return {accessor, path + c}; }
|
||||
|
||||
bool operator == (const SourcePath & x) const
|
||||
{
|
||||
return path == x.path;
|
||||
return std::tie(accessor, path) == std::tie(x.accessor, x.path);
|
||||
}
|
||||
|
||||
bool operator != (const SourcePath & x) const
|
||||
{
|
||||
return path != x.path;
|
||||
return std::tie(accessor, path) != std::tie(x.accessor, x.path);
|
||||
}
|
||||
|
||||
bool operator < (const SourcePath & x) const
|
||||
{
|
||||
return path < x.path;
|
||||
return std::tie(accessor, path) < std::tie(x.accessor, x.path);
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
|
|||
54
src/libfetchers/memory-input-accessor.cc
Normal file
54
src/libfetchers/memory-input-accessor.cc
Normal file
|
|
@ -0,0 +1,54 @@
|
|||
#include "memory-input-accessor.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
struct MemoryInputAccessorImpl : MemoryInputAccessor
|
||||
{
|
||||
std::map<CanonPath, std::string> files;
|
||||
|
||||
std::string readFile(const CanonPath & path) override
|
||||
{
|
||||
auto i = files.find(path);
|
||||
if (i == files.end())
|
||||
throw Error("file '%s' does not exist", path);
|
||||
return i->second;
|
||||
}
|
||||
|
||||
bool pathExists(const CanonPath & path) override
|
||||
{
|
||||
auto i = files.find(path);
|
||||
return i != files.end();
|
||||
}
|
||||
|
||||
Stat lstat(const CanonPath & path) override
|
||||
{
|
||||
auto i = files.find(path);
|
||||
if (i != files.end())
|
||||
return Stat { .type = tRegular, .isExecutable = false };
|
||||
throw Error("file '%s' does not exist", path);
|
||||
}
|
||||
|
||||
DirEntries readDirectory(const CanonPath & path) override
|
||||
{
|
||||
return {};
|
||||
}
|
||||
|
||||
std::string readLink(const CanonPath & path) override
|
||||
{
|
||||
throw UnimplementedError("MemoryInputAccessor::readLink");
|
||||
}
|
||||
|
||||
SourcePath addFile(CanonPath path, std::string && contents) override
|
||||
{
|
||||
files.emplace(path, std::move(contents));
|
||||
|
||||
return {ref(shared_from_this()), std::move(path)};
|
||||
}
|
||||
};
|
||||
|
||||
ref<MemoryInputAccessor> makeMemoryInputAccessor()
|
||||
{
|
||||
return make_ref<MemoryInputAccessorImpl>();
|
||||
}
|
||||
|
||||
}
|
||||
15
src/libfetchers/memory-input-accessor.hh
Normal file
15
src/libfetchers/memory-input-accessor.hh
Normal file
|
|
@ -0,0 +1,15 @@
|
|||
#include "input-accessor.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
/**
|
||||
* An input accessor for an in-memory file system.
|
||||
*/
|
||||
struct MemoryInputAccessor : InputAccessor
|
||||
{
|
||||
virtual SourcePath addFile(CanonPath path, std::string && contents) = 0;
|
||||
};
|
||||
|
||||
ref<MemoryInputAccessor> makeMemoryInputAccessor();
|
||||
|
||||
}
|
||||
|
|
@ -225,12 +225,16 @@ StorePath Store::makeFixedOutputPathFromCA(std::string_view name, const ContentA
|
|||
}
|
||||
|
||||
|
||||
std::pair<StorePath, Hash> Store::computeStorePathForPath(std::string_view name,
|
||||
const Path & srcPath, FileIngestionMethod method, HashType hashAlgo, PathFilter & filter) const
|
||||
std::pair<StorePath, Hash> Store::computeStorePathFromDump(
|
||||
Source & dump,
|
||||
std::string_view name,
|
||||
FileIngestionMethod method,
|
||||
HashType hashAlgo,
|
||||
const StorePathSet & references) const
|
||||
{
|
||||
Hash h = method == FileIngestionMethod::Recursive
|
||||
? hashPath(hashAlgo, srcPath, filter).first
|
||||
: hashFile(hashAlgo, srcPath);
|
||||
HashSink sink(hashAlgo);
|
||||
dump.drainInto(sink);
|
||||
auto h = sink.finish().first;
|
||||
FixedOutputInfo caInfo {
|
||||
.method = method,
|
||||
.hash = h,
|
||||
|
|
|
|||
|
|
@ -292,14 +292,15 @@ public:
|
|||
StorePath makeFixedOutputPathFromCA(std::string_view name, const ContentAddressWithReferences & ca) const;
|
||||
|
||||
/**
|
||||
* Preparatory part of addToStore().
|
||||
*
|
||||
* @return the store path to which srcPath is to be copied
|
||||
* and the cryptographic hash of the contents of srcPath.
|
||||
* Read-only variant of addToStoreFromDump(). It returns the store
|
||||
* path to which a NAR or flat file would be written.
|
||||
*/
|
||||
std::pair<StorePath, Hash> computeStorePathForPath(std::string_view name,
|
||||
const Path & srcPath, FileIngestionMethod method = FileIngestionMethod::Recursive,
|
||||
HashType hashAlgo = htSHA256, PathFilter & filter = defaultPathFilter) const;
|
||||
std::pair<StorePath, Hash> computeStorePathFromDump(
|
||||
Source & dump,
|
||||
std::string_view name,
|
||||
FileIngestionMethod method = FileIngestionMethod::Recursive,
|
||||
HashType hashAlgo = htSHA256,
|
||||
const StorePathSet & references = {}) const;
|
||||
|
||||
/**
|
||||
* Preparatory part of addTextToStore().
|
||||
|
|
|
|||
|
|
@ -14,6 +14,7 @@
|
|||
#include "archive.hh"
|
||||
#include "util.hh"
|
||||
#include "config.hh"
|
||||
#include "posix-source-accessor.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
|
|
@ -36,91 +37,87 @@ static GlobalConfig::Register rArchiveSettings(&archiveSettings);
|
|||
PathFilter defaultPathFilter = [](const Path &) { return true; };
|
||||
|
||||
|
||||
static void dumpContents(const Path & path, off_t size,
|
||||
Sink & sink)
|
||||
void SourceAccessor::dumpPath(
|
||||
const CanonPath & path,
|
||||
Sink & sink,
|
||||
PathFilter & filter)
|
||||
{
|
||||
sink << "contents" << size;
|
||||
auto dumpContents = [&](const CanonPath & path)
|
||||
{
|
||||
sink << "contents";
|
||||
std::optional<uint64_t> size;
|
||||
readFile(path, sink, [&](uint64_t _size)
|
||||
{
|
||||
size = _size;
|
||||
sink << _size;
|
||||
});
|
||||
assert(size);
|
||||
writePadding(*size, sink);
|
||||
};
|
||||
|
||||
AutoCloseFD fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
|
||||
if (!fd) throw SysError("opening file '%1%'", path);
|
||||
std::function<void(const CanonPath & path)> dump;
|
||||
|
||||
std::vector<char> buf(65536);
|
||||
size_t left = size;
|
||||
dump = [&](const CanonPath & path) {
|
||||
checkInterrupt();
|
||||
|
||||
while (left > 0) {
|
||||
auto n = std::min(left, buf.size());
|
||||
readFull(fd.get(), buf.data(), n);
|
||||
left -= n;
|
||||
sink({buf.data(), n});
|
||||
}
|
||||
auto st = lstat(path);
|
||||
|
||||
writePadding(size, sink);
|
||||
}
|
||||
sink << "(";
|
||||
|
||||
if (st.type == tRegular) {
|
||||
sink << "type" << "regular";
|
||||
if (st.isExecutable)
|
||||
sink << "executable" << "";
|
||||
dumpContents(path);
|
||||
}
|
||||
|
||||
static time_t dump(const Path & path, Sink & sink, PathFilter & filter)
|
||||
{
|
||||
checkInterrupt();
|
||||
else if (st.type == tDirectory) {
|
||||
sink << "type" << "directory";
|
||||
|
||||
auto st = lstat(path);
|
||||
time_t result = st.st_mtime;
|
||||
/* If we're on a case-insensitive system like macOS, undo
|
||||
the case hack applied by restorePath(). */
|
||||
std::map<std::string, std::string> unhacked;
|
||||
for (auto & i : readDirectory(path))
|
||||
if (archiveSettings.useCaseHack) {
|
||||
std::string name(i.first);
|
||||
size_t pos = i.first.find(caseHackSuffix);
|
||||
if (pos != std::string::npos) {
|
||||
debug("removing case hack suffix from '%s'", path + i.first);
|
||||
name.erase(pos);
|
||||
}
|
||||
if (!unhacked.emplace(name, i.first).second)
|
||||
throw Error("file name collision in between '%s' and '%s'",
|
||||
(path + unhacked[name]),
|
||||
(path + i.first));
|
||||
} else
|
||||
unhacked.emplace(i.first, i.first);
|
||||
|
||||
sink << "(";
|
||||
|
||||
if (S_ISREG(st.st_mode)) {
|
||||
sink << "type" << "regular";
|
||||
if (st.st_mode & S_IXUSR)
|
||||
sink << "executable" << "";
|
||||
dumpContents(path, st.st_size, sink);
|
||||
}
|
||||
|
||||
else if (S_ISDIR(st.st_mode)) {
|
||||
sink << "type" << "directory";
|
||||
|
||||
/* If we're on a case-insensitive system like macOS, undo
|
||||
the case hack applied by restorePath(). */
|
||||
std::map<std::string, std::string> unhacked;
|
||||
for (auto & i : readDirectory(path))
|
||||
if (archiveSettings.useCaseHack) {
|
||||
std::string name(i.name);
|
||||
size_t pos = i.name.find(caseHackSuffix);
|
||||
if (pos != std::string::npos) {
|
||||
debug("removing case hack suffix from '%1%'", path + "/" + i.name);
|
||||
name.erase(pos);
|
||||
for (auto & i : unhacked)
|
||||
if (filter((path + i.first).abs())) {
|
||||
sink << "entry" << "(" << "name" << i.first << "node";
|
||||
dump(path + i.second);
|
||||
sink << ")";
|
||||
}
|
||||
if (!unhacked.emplace(name, i.name).second)
|
||||
throw Error("file name collision in between '%1%' and '%2%'",
|
||||
(path + "/" + unhacked[name]),
|
||||
(path + "/" + i.name));
|
||||
} else
|
||||
unhacked.emplace(i.name, i.name);
|
||||
}
|
||||
|
||||
for (auto & i : unhacked)
|
||||
if (filter(path + "/" + i.first)) {
|
||||
sink << "entry" << "(" << "name" << i.first << "node";
|
||||
auto tmp_mtime = dump(path + "/" + i.second, sink, filter);
|
||||
if (tmp_mtime > result) {
|
||||
result = tmp_mtime;
|
||||
}
|
||||
sink << ")";
|
||||
}
|
||||
}
|
||||
else if (st.type == tSymlink)
|
||||
sink << "type" << "symlink" << "target" << readLink(path);
|
||||
|
||||
else if (S_ISLNK(st.st_mode))
|
||||
sink << "type" << "symlink" << "target" << readLink(path);
|
||||
else throw Error("file '%s' has an unsupported type", path);
|
||||
|
||||
else throw Error("file '%1%' has an unsupported type", path);
|
||||
sink << ")";
|
||||
};
|
||||
|
||||
sink << ")";
|
||||
|
||||
return result;
|
||||
sink << narVersionMagic1;
|
||||
dump(path);
|
||||
}
|
||||
|
||||
|
||||
time_t dumpPathAndGetMtime(const Path & path, Sink & sink, PathFilter & filter)
|
||||
{
|
||||
sink << narVersionMagic1;
|
||||
return dump(path, sink, filter);
|
||||
PosixSourceAccessor accessor;
|
||||
accessor.dumpPath(CanonPath::fromCwd(path), sink, filter);
|
||||
return accessor.mtime;
|
||||
}
|
||||
|
||||
void dumpPath(const Path & path, Sink & sink, PathFilter & filter)
|
||||
|
|
@ -141,17 +138,6 @@ static SerialisationError badArchive(const std::string & s)
|
|||
}
|
||||
|
||||
|
||||
#if 0
|
||||
static void skipGeneric(Source & source)
|
||||
{
|
||||
if (readString(source) == "(") {
|
||||
while (readString(source) != ")")
|
||||
skipGeneric(source);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
static void parseContents(ParseSink & sink, Source & source, const Path & path)
|
||||
{
|
||||
uint64_t size = readLongLong(source);
|
||||
|
|
|
|||
86
src/libutil/posix-source-accessor.cc
Normal file
86
src/libutil/posix-source-accessor.cc
Normal file
|
|
@ -0,0 +1,86 @@
|
|||
#include "posix-source-accessor.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
void PosixSourceAccessor::readFile(
|
||||
const CanonPath & path,
|
||||
Sink & sink,
|
||||
std::function<void(uint64_t)> sizeCallback)
|
||||
{
|
||||
// FIXME: add O_NOFOLLOW since symlinks should be resolved by the
|
||||
// caller?
|
||||
AutoCloseFD fd = open(path.c_str(), O_RDONLY | O_CLOEXEC);
|
||||
if (!fd)
|
||||
throw SysError("opening file '%1%'", path);
|
||||
|
||||
struct stat st;
|
||||
if (fstat(fd.get(), &st) == -1)
|
||||
throw SysError("statting file");
|
||||
|
||||
sizeCallback(st.st_size);
|
||||
|
||||
off_t left = st.st_size;
|
||||
|
||||
std::vector<unsigned char> buf(64 * 1024);
|
||||
while (left) {
|
||||
checkInterrupt();
|
||||
ssize_t rd = read(fd.get(), buf.data(), (size_t) std::min(left, (off_t) buf.size()));
|
||||
if (rd == -1) {
|
||||
if (errno != EINTR)
|
||||
throw SysError("reading from file '%s'", showPath(path));
|
||||
}
|
||||
else if (rd == 0)
|
||||
throw SysError("unexpected end-of-file reading '%s'", showPath(path));
|
||||
else {
|
||||
assert(rd <= left);
|
||||
sink({(char *) buf.data(), (size_t) rd});
|
||||
left -= rd;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bool PosixSourceAccessor::pathExists(const CanonPath & path)
|
||||
{
|
||||
return nix::pathExists(path.abs());
|
||||
}
|
||||
|
||||
SourceAccessor::Stat PosixSourceAccessor::lstat(const CanonPath & path)
|
||||
{
|
||||
auto st = nix::lstat(path.abs());
|
||||
mtime = std::max(mtime, st.st_mtime);
|
||||
return Stat {
|
||||
.type =
|
||||
S_ISREG(st.st_mode) ? tRegular :
|
||||
S_ISDIR(st.st_mode) ? tDirectory :
|
||||
S_ISLNK(st.st_mode) ? tSymlink :
|
||||
tMisc,
|
||||
.isExecutable = S_ISREG(st.st_mode) && st.st_mode & S_IXUSR
|
||||
};
|
||||
}
|
||||
|
||||
SourceAccessor::DirEntries PosixSourceAccessor::readDirectory(const CanonPath & path)
|
||||
{
|
||||
DirEntries res;
|
||||
for (auto & entry : nix::readDirectory(path.abs())) {
|
||||
std::optional<Type> type;
|
||||
switch (entry.type) {
|
||||
case DT_REG: type = Type::tRegular; break;
|
||||
case DT_LNK: type = Type::tSymlink; break;
|
||||
case DT_DIR: type = Type::tDirectory; break;
|
||||
}
|
||||
res.emplace(entry.name, type);
|
||||
}
|
||||
return res;
|
||||
}
|
||||
|
||||
std::string PosixSourceAccessor::readLink(const CanonPath & path)
|
||||
{
|
||||
return nix::readLink(path.abs());
|
||||
}
|
||||
|
||||
std::optional<CanonPath> PosixSourceAccessor::getPhysicalPath(const CanonPath & path)
|
||||
{
|
||||
return path;
|
||||
}
|
||||
|
||||
}
|
||||
34
src/libutil/posix-source-accessor.hh
Normal file
34
src/libutil/posix-source-accessor.hh
Normal file
|
|
@ -0,0 +1,34 @@
|
|||
#pragma once
|
||||
|
||||
#include "source-accessor.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
/**
|
||||
* A source accessor that uses the Unix filesystem.
|
||||
*/
|
||||
struct PosixSourceAccessor : SourceAccessor
|
||||
{
|
||||
/**
|
||||
* The most recent mtime seen by lstat(). This is a hack to
|
||||
* support dumpPathAndGetMtime(). Should remove this eventually.
|
||||
*/
|
||||
time_t mtime = 0;
|
||||
|
||||
void readFile(
|
||||
const CanonPath & path,
|
||||
Sink & sink,
|
||||
std::function<void(uint64_t)> sizeCallback) override;
|
||||
|
||||
bool pathExists(const CanonPath & path) override;
|
||||
|
||||
Stat lstat(const CanonPath & path) override;
|
||||
|
||||
DirEntries readDirectory(const CanonPath & path) override;
|
||||
|
||||
std::string readLink(const CanonPath & path) override;
|
||||
|
||||
std::optional<CanonPath> getPhysicalPath(const CanonPath & path) override;
|
||||
};
|
||||
|
||||
}
|
||||
58
src/libutil/source-accessor.cc
Normal file
58
src/libutil/source-accessor.cc
Normal file
|
|
@ -0,0 +1,58 @@
|
|||
#include "source-accessor.hh"
|
||||
#include "archive.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
static std::atomic<size_t> nextNumber{0};
|
||||
|
||||
SourceAccessor::SourceAccessor()
|
||||
: number(++nextNumber)
|
||||
{
|
||||
}
|
||||
|
||||
std::string SourceAccessor::readFile(const CanonPath & path)
|
||||
{
|
||||
StringSink sink;
|
||||
std::optional<uint64_t> size;
|
||||
readFile(path, sink, [&](uint64_t _size)
|
||||
{
|
||||
size = _size;
|
||||
});
|
||||
assert(size && *size == sink.s.size());
|
||||
return std::move(sink.s);
|
||||
}
|
||||
|
||||
void SourceAccessor::readFile(
|
||||
const CanonPath & path,
|
||||
Sink & sink,
|
||||
std::function<void(uint64_t)> sizeCallback)
|
||||
{
|
||||
auto s = readFile(path);
|
||||
sizeCallback(s.size());
|
||||
sink(s);
|
||||
}
|
||||
|
||||
Hash SourceAccessor::hashPath(
|
||||
const CanonPath & path,
|
||||
PathFilter & filter,
|
||||
HashType ht)
|
||||
{
|
||||
HashSink sink(ht);
|
||||
dumpPath(path, sink, filter);
|
||||
return sink.finish().first;
|
||||
}
|
||||
|
||||
std::optional<SourceAccessor::Stat> SourceAccessor::maybeLstat(const CanonPath & path)
|
||||
{
|
||||
// FIXME: merge these into one operation.
|
||||
if (!pathExists(path))
|
||||
return {};
|
||||
return lstat(path);
|
||||
}
|
||||
|
||||
std::string SourceAccessor::showPath(const CanonPath & path)
|
||||
{
|
||||
return path.abs();
|
||||
}
|
||||
|
||||
}
|
||||
107
src/libutil/source-accessor.hh
Normal file
107
src/libutil/source-accessor.hh
Normal file
|
|
@ -0,0 +1,107 @@
|
|||
#pragma once
|
||||
|
||||
#include "canon-path.hh"
|
||||
#include "hash.hh"
|
||||
|
||||
namespace nix {
|
||||
|
||||
struct Sink;
|
||||
|
||||
/**
|
||||
* A read-only filesystem abstraction. This is used by the Nix
|
||||
* evaluator and elsewhere for accessing sources in various
|
||||
* filesystem-like entities (such as the real filesystem, tarballs or
|
||||
* Git repositories).
|
||||
*/
|
||||
struct SourceAccessor
|
||||
{
|
||||
const size_t number;
|
||||
|
||||
SourceAccessor();
|
||||
|
||||
virtual ~SourceAccessor()
|
||||
{ }
|
||||
|
||||
/**
|
||||
* Return the contents of a file as a string.
|
||||
*/
|
||||
virtual std::string readFile(const CanonPath & path);
|
||||
|
||||
/**
|
||||
* Write the contents of a file as a sink. `sizeCallback` must be
|
||||
* called with the size of the file before any data is written to
|
||||
* the sink.
|
||||
*
|
||||
* Note: subclasses of `SourceAccessor` need to implement at least
|
||||
* one of the `readFile()` variants.
|
||||
*/
|
||||
virtual void readFile(
|
||||
const CanonPath & path,
|
||||
Sink & sink,
|
||||
std::function<void(uint64_t)> sizeCallback = [](uint64_t size){});
|
||||
|
||||
virtual bool pathExists(const CanonPath & path) = 0;
|
||||
|
||||
enum Type {
|
||||
tRegular, tSymlink, tDirectory,
|
||||
/**
|
||||
Any other node types that may be encountered on the file system, such as device nodes, sockets, named pipe, and possibly even more exotic things.
|
||||
|
||||
Responsible for `"unknown"` from `builtins.readFileType "/dev/null"`.
|
||||
|
||||
Unlike `DT_UNKNOWN`, this must not be used for deferring the lookup of types.
|
||||
*/
|
||||
tMisc
|
||||
};
|
||||
|
||||
struct Stat
|
||||
{
|
||||
Type type = tMisc;
|
||||
//uint64_t fileSize = 0; // regular files only
|
||||
bool isExecutable = false; // regular files only
|
||||
};
|
||||
|
||||
virtual Stat lstat(const CanonPath & path) = 0;
|
||||
|
||||
std::optional<Stat> maybeLstat(const CanonPath & path);
|
||||
|
||||
typedef std::optional<Type> DirEntry;
|
||||
|
||||
typedef std::map<std::string, DirEntry> DirEntries;
|
||||
|
||||
virtual DirEntries readDirectory(const CanonPath & path) = 0;
|
||||
|
||||
virtual std::string readLink(const CanonPath & path) = 0;
|
||||
|
||||
virtual void dumpPath(
|
||||
const CanonPath & path,
|
||||
Sink & sink,
|
||||
PathFilter & filter = defaultPathFilter);
|
||||
|
||||
Hash hashPath(
|
||||
const CanonPath & path,
|
||||
PathFilter & filter = defaultPathFilter,
|
||||
HashType ht = htSHA256);
|
||||
|
||||
/**
|
||||
* Return a corresponding path in the root filesystem, if
|
||||
* possible. This is only possible for filesystems that are
|
||||
* materialized in the root filesystem.
|
||||
*/
|
||||
virtual std::optional<CanonPath> getPhysicalPath(const CanonPath & path)
|
||||
{ return std::nullopt; }
|
||||
|
||||
bool operator == (const SourceAccessor & x) const
|
||||
{
|
||||
return number == x.number;
|
||||
}
|
||||
|
||||
bool operator < (const SourceAccessor & x) const
|
||||
{
|
||||
return number < x.number;
|
||||
}
|
||||
|
||||
virtual std::string showPath(const CanonPath & path);
|
||||
};
|
||||
|
||||
}
|
||||
|
|
@ -12,6 +12,7 @@
|
|||
#include "finally.hh"
|
||||
#include "loggers.hh"
|
||||
#include "markdown.hh"
|
||||
#include "memory-input-accessor.hh"
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
|
|
@ -204,31 +205,22 @@ static void showHelp(std::vector<std::string> subcommand, NixArgs & toplevel)
|
|||
auto vGenerateManpage = state.allocValue();
|
||||
state.eval(state.parseExprFromString(
|
||||
#include "generate-manpage.nix.gen.hh"
|
||||
, CanonPath::root), *vGenerateManpage);
|
||||
, state.rootPath(CanonPath::root)), *vGenerateManpage);
|
||||
|
||||
auto vUtils = state.allocValue();
|
||||
state.cacheFile(
|
||||
CanonPath("/utils.nix"), CanonPath("/utils.nix"),
|
||||
state.parseExprFromString(
|
||||
#include "utils.nix.gen.hh"
|
||||
, CanonPath::root),
|
||||
*vUtils);
|
||||
state.corepkgsFS->addFile(
|
||||
CanonPath("utils.nix"),
|
||||
#include "utils.nix.gen.hh"
|
||||
);
|
||||
|
||||
auto vSettingsInfo = state.allocValue();
|
||||
state.cacheFile(
|
||||
CanonPath("/generate-settings.nix"), CanonPath("/generate-settings.nix"),
|
||||
state.parseExprFromString(
|
||||
#include "generate-settings.nix.gen.hh"
|
||||
, CanonPath::root),
|
||||
*vSettingsInfo);
|
||||
state.corepkgsFS->addFile(
|
||||
CanonPath("/generate-settings.nix"),
|
||||
#include "generate-settings.nix.gen.hh"
|
||||
);
|
||||
|
||||
auto vStoreInfo = state.allocValue();
|
||||
state.cacheFile(
|
||||
CanonPath("/generate-store-info.nix"), CanonPath("/generate-store-info.nix"),
|
||||
state.parseExprFromString(
|
||||
#include "generate-store-info.nix.gen.hh"
|
||||
, CanonPath::root),
|
||||
*vStoreInfo);
|
||||
state.corepkgsFS->addFile(
|
||||
CanonPath("/generate-store-info.nix"),
|
||||
#include "generate-store-info.nix.gen.hh"
|
||||
);
|
||||
|
||||
auto vDump = state.allocValue();
|
||||
vDump->mkString(toplevel.dumpCli());
|
||||
|
|
|
|||
|
|
@ -1 +1 @@
|
|||
"/nix/store/ya937r4ydw0l6kayq8jkyqaips9c75jm-output"
|
||||
[ "/nix/store/ya937r4ydw0l6kayq8jkyqaips9c75jm-output" "/nix/store/m7y372g6jb0g4hh1dzmj847rd356fhnz-output" ]
|
||||
|
|
|
|||
|
|
@ -1,7 +1,15 @@
|
|||
builtins.path
|
||||
{ path = ./.;
|
||||
filter = path: _: baseNameOf path == "data";
|
||||
recursive = true;
|
||||
sha256 = "1yhm3gwvg5a41yylymgblsclk95fs6jy72w0wv925mmidlhcq4sw";
|
||||
name = "output";
|
||||
}
|
||||
[
|
||||
(builtins.path
|
||||
{ path = ./.;
|
||||
filter = path: _: baseNameOf path == "data";
|
||||
recursive = true;
|
||||
sha256 = "1yhm3gwvg5a41yylymgblsclk95fs6jy72w0wv925mmidlhcq4sw";
|
||||
name = "output";
|
||||
})
|
||||
(builtins.path
|
||||
{ path = ./data;
|
||||
recursive = false;
|
||||
sha256 = "0k4lwj58f2w5yh92ilrwy9917pycipbrdrr13vbb3yd02j09vfxm";
|
||||
name = "output";
|
||||
})
|
||||
]
|
||||
|
|
|
|||
|
|
@ -25,5 +25,7 @@ builtins.pathExists (./lib.nix)
|
|||
&& builtins.pathExists (builtins.toString ./. + "/../lang/..//")
|
||||
&& builtins.pathExists (builtins.toPath (builtins.toString ./lib.nix))
|
||||
&& !builtins.pathExists (builtins.toPath (builtins.toString ./bla.nix))
|
||||
&& builtins.pathExists (builtins.toPath { __toString = x: builtins.toString ./lib.nix; })
|
||||
&& builtins.pathExists (builtins.toPath { outPath = builtins.toString ./lib.nix; })
|
||||
&& builtins.pathExists ./lib.nix
|
||||
&& !builtins.pathExists ./bla.nix
|
||||
|
|
|
|||
Loading…
Reference in a new issue