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Fix flake subdir handling

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This commit is contained in:
Eelco Dolstra 2022-05-12 19:31:07 +02:00
parent 1ee5dd6d96
commit 9e05daaa9e
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GPG key ID: 8170B4726D7198DE
2 changed files with 28 additions and 25 deletions
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50
src/libexpr/flake/flake.cc
View file

@ -222,8 +222,7 @@ static Flake readFlake(
.originalRef = lockedRef, .originalRef = lockedRef,
.resolvedRef = lockedRef, .resolvedRef = lockedRef,
.lockedRef = lockedRef, .lockedRef = lockedRef,
.accessor = &accessor, .path = flakePath,
.flakePath = dirOf(flakePath.path),
}; };
if (auto description = vInfo.attrs->get(state.sDescription)) { if (auto description = vInfo.attrs->get(state.sDescription)) {
@ -332,7 +331,7 @@ Flake getFlake(EvalState & state, const FlakeRef & originalRef, bool allowLookup
static LockFile readLockFile(const Flake & flake) static LockFile readLockFile(const Flake & flake)
{ {
SourcePath lockFilePath{*flake.accessor, canonPath(flake.flakePath + "/flake.lock")}; auto lockFilePath = flake.path.parent().append("/flake.lock");
return lockFilePath.pathExists() return lockFilePath.pathExists()
? LockFile(lockFilePath.readFile(), fmt("%s", lockFilePath)) ? LockFile(lockFilePath.readFile(), fmt("%s", lockFilePath))
: LockFile(); : LockFile();
@ -351,16 +350,16 @@ LockedFlake lockFlake(
auto useRegistries = lockFlags.useRegistries.value_or(fetchSettings.useRegistries); auto useRegistries = lockFlags.useRegistries.value_or(fetchSettings.useRegistries);
auto flake = getFlake(state, topRef, useRegistries, flakeCache, {}); auto flake = std::make_unique<Flake>(getFlake(state, topRef, useRegistries, flakeCache, {}));
if (lockFlags.applyNixConfig) { if (lockFlags.applyNixConfig) {
flake.config.apply(); flake->config.apply();
state.store->setOptions(); state.store->setOptions();
} }
try { try {
auto oldLockFile = readLockFile(flake); auto oldLockFile = readLockFile(*flake);
debug("old lock file: %s", oldLockFile); debug("old lock file: %s", oldLockFile);
@ -381,7 +380,7 @@ LockedFlake lockFlake(
const InputPath & inputPathPrefix, const InputPath & inputPathPrefix,
std::shared_ptr<const Node> oldNode, std::shared_ptr<const Node> oldNode,
const InputPath & lockRootPath, const InputPath & lockRootPath,
const Path & parentPath, const SourcePath & parentPath,
bool trustLock)> bool trustLock)>
computeLocks; computeLocks;
@ -391,7 +390,7 @@ LockedFlake lockFlake(
const InputPath & inputPathPrefix, const InputPath & inputPathPrefix,
std::shared_ptr<const Node> oldNode, std::shared_ptr<const Node> oldNode,
const InputPath & lockRootPath, const InputPath & lockRootPath,
const Path & parentPath, const SourcePath & parentPath,
bool trustLock) bool trustLock)
{ {
debug("computing lock file node '%s'", printInputPath(inputPathPrefix)); debug("computing lock file node '%s'", printInputPath(inputPathPrefix));
@ -518,10 +517,12 @@ LockedFlake lockFlake(
} }
auto localPath(parentPath); auto localPath(parentPath);
#if 0
// If this input is a path, recurse it down. // If this input is a path, recurse it down.
// This allows us to resolve path inputs relative to the current flake. // This allows us to resolve path inputs relative to the current flake.
if ((*input.ref).input.getType() == "path") if ((*input.ref).input.getType() == "path")
localPath = absPath(*input.ref->input.getSourcePath(), parentPath); localPath = absPath(*input.ref->input.getSourcePath(), parentPath);
#endif
computeLocks( computeLocks(
mustRefetch mustRefetch
? getFlake(state, oldLock->lockedRef, false, flakeCache, inputPath).inputs ? getFlake(state, oldLock->lockedRef, false, flakeCache, inputPath).inputs
@ -537,13 +538,15 @@ LockedFlake lockFlake(
throw Error("cannot update flake input '%s' in pure mode", inputPathS); throw Error("cannot update flake input '%s' in pure mode", inputPathS);
if (input.isFlake) { if (input.isFlake) {
Path localPath = parentPath; auto localPath(parentPath);
FlakeRef localRef = *input.ref; FlakeRef localRef = *input.ref;
#if 0
// If this input is a path, recurse it down. // If this input is a path, recurse it down.
// This allows us to resolve path inputs relative to the current flake. // This allows us to resolve path inputs relative to the current flake.
if (localRef.input.getType() == "path") if (localRef.input.getType() == "path")
localPath = absPath(*input.ref->input.getSourcePath(), parentPath); localPath = absPath(*input.ref->input.getSourcePath(), parentPath);
#endif
auto inputFlake = getFlake(state, localRef, useRegistries, flakeCache, inputPath); auto inputFlake = getFlake(state, localRef, useRegistries, flakeCache, inputPath);
@ -594,8 +597,8 @@ LockedFlake lockFlake(
}; };
computeLocks( computeLocks(
flake.inputs, newLockFile.root, {}, flake->inputs, newLockFile.root, {},
lockFlags.recreateLockFile ? nullptr : oldLockFile.root, {}, flake.flakePath, false); lockFlags.recreateLockFile ? nullptr : oldLockFile.root, {}, flake->path, false);
for (auto & i : lockFlags.inputOverrides) for (auto & i : lockFlags.inputOverrides)
if (!overridesUsed.count(i.first)) if (!overridesUsed.count(i.first))
@ -664,35 +667,36 @@ LockedFlake lockFlake(
/* Rewriting the lockfile changed the top-level /* Rewriting the lockfile changed the top-level
repo, so we should re-read it. FIXME: we could repo, so we should re-read it. FIXME: we could
also just clear the 'rev' field... */ also just clear the 'rev' field... */
auto prevLockedRef = flake.lockedRef; auto prevLockedRef = flake->lockedRef;
FlakeCache dummyCache; FlakeCache dummyCache;
flake = getFlake(state, topRef, useRegistries, dummyCache); flake = std::make_unique<Flake>(getFlake(state, topRef, useRegistries, dummyCache));
if (lockFlags.commitLockFile && if (lockFlags.commitLockFile &&
flake.lockedRef.input.getRev() && flake->lockedRef.input.getRev() &&
prevLockedRef.input.getRev() != flake.lockedRef.input.getRev()) prevLockedRef.input.getRev() != flake->lockedRef.input.getRev())
warn("committed new revision '%s'", flake.lockedRef.input.getRev()->gitRev()); warn("committed new revision '%s'", flake->lockedRef.input.getRev()->gitRev());
/* Make sure that we picked up the change, /* Make sure that we picked up the change,
i.e. the tree should usually be dirty i.e. the tree should usually be dirty
now. Corner case: we could have reverted from a now. Corner case: we could have reverted from a
dirty to a clean tree! */ dirty to a clean tree! */
if (flake.lockedRef.input == prevLockedRef.input if (flake->lockedRef.input == prevLockedRef.input
&& !flake.lockedRef.input.isLocked()) && !flake->lockedRef.input.isLocked())
throw Error("'%s' did not change after I updated its 'flake.lock' file; is 'flake.lock' under version control?", flake.originalRef); throw Error("'%s' did not change after I updated its 'flake.lock' file; is 'flake.lock' under version control?", flake->originalRef);
} }
} else } else
throw Error("cannot write modified lock file of flake '%s' (use '--no-write-lock-file' to ignore)", topRef); throw Error("cannot write modified lock file of flake '%s' (use '--no-write-lock-file' to ignore)", topRef);
} else { } else {
warn("not writing modified lock file of flake '%s':\n%s", topRef, chomp(diff)); warn("not writing modified lock file of flake '%s':\n%s", topRef, chomp(diff));
flake.forceDirty = true; flake->forceDirty = true;
} }
} }
return LockedFlake { .flake = std::move(flake), .lockFile = std::move(newLockFile) }; return LockedFlake { .flake = std::move(*flake), .lockFile = std::move(newLockFile) };
} catch (Error & e) { } catch (Error & e) {
e.addTrace({}, "while updating the lock file of flake '%s'", flake.lockedRef.to_string()); if (flake)
e.addTrace({}, "while updating the lock file of flake '%s'", flake->lockedRef.to_string());
throw; throw;
} }
} }
@ -711,7 +715,7 @@ void callFlake(EvalState & state,
emitTreeAttrs( emitTreeAttrs(
state, state,
{*lockedFlake.flake.accessor, lockedFlake.flake.flakePath}, {lockedFlake.flake.path.accessor, "/"},
lockedFlake.flake.lockedRef.input, lockedFlake.flake.lockedRef.input,
*vRootSrc, *vRootSrc,
false, false,

3
src/libexpr/flake/flake.hh
View file

@ -61,8 +61,7 @@ struct Flake
FlakeRef originalRef; // the original flake specification (by the user) FlakeRef originalRef; // the original flake specification (by the user)
FlakeRef resolvedRef; // registry references and caching resolved to the specific underlying flake FlakeRef resolvedRef; // registry references and caching resolved to the specific underlying flake
FlakeRef lockedRef; // the specific local store result of invoking the fetcher FlakeRef lockedRef; // the specific local store result of invoking the fetcher
InputAccessor * accessor; // FIXME: must be non-null SourcePath path;
Path flakePath;
bool forceDirty = false; // pretend that 'lockedRef' is dirty bool forceDirty = false; // pretend that 'lockedRef' is dirty
std::optional<std::string> description; std::optional<std::string> description;
FlakeInputs inputs; FlakeInputs inputs;