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nix-env/nix-instantiate/nix-build: Support URIs
For instance, you can install Firefox from a specific Nixpkgs revision
like this:
$ nix-env -f 63def04891
.tar.gz -iA firefox
Or build a package from the latest nixpkgs-unstable channel:
$ nix-build https://nixos.org/channels/nixpkgs-unstable/nixexprs.tar.xz -A hello
This commit is contained in:
parent
0705d04dfa
commit
6519f06f39
5 changed files with 19 additions and 14 deletions
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@ -1,5 +1,6 @@
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#include "common-opts.hh"
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#include "../libmain/shared.hh"
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#include "shared.hh"
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#include "download.hh"
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#include "util.hh"
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@ -53,7 +54,9 @@ bool parseSearchPathArg(Strings::iterator & i,
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Path lookupFileArg(EvalState & state, string s)
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{
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if (s.size() > 2 && s.at(0) == '<' && s.at(s.size() - 1) == '>') {
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if (isUri(s))
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return downloadFileCached(s, true);
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else if (s.size() > 2 && s.at(0) == '<' && s.at(s.size() - 1) == '>') {
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Path p = s.substr(1, s.size() - 2);
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return state.findFile(p);
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} else
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@ -223,4 +223,13 @@ Path downloadFileCached(const string & url, bool unpack)
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}
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bool isUri(const string & s)
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{
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size_t pos = s.find("://");
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if (pos == string::npos) return false;
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string scheme(s, 0, pos);
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return scheme == "http" || scheme == "https";
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}
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}
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@ -17,4 +17,6 @@ Path downloadFileCached(const string & url, bool unpack);
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MakeError(DownloadError, Error)
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bool isUri(const string & s);
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}
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@ -601,15 +601,6 @@ Expr * EvalState::parseExprFromString(const string & s, const Path & basePath)
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}
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bool isUri(const string & s)
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{
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size_t pos = s.find("://");
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if (pos == string::npos) return false;
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string scheme(s, 0, pos);
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return scheme == "http" || scheme == "https";
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}
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void EvalState::addToSearchPath(const string & s, bool warn)
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{
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size_t pos = s.find('=');
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@ -183,10 +183,10 @@ int main(int argc, char * * argv)
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} else if (files.empty() && !fromArgs)
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files.push_back("./default.nix");
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foreach (Strings::iterator, i, files) {
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for (auto & i : files) {
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Expr * e = fromArgs
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? state.parseExprFromString(*i, absPath("."))
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: state.parseExprFromFile(resolveExprPath(lookupFileArg(state, *i)));
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? state.parseExprFromString(i, absPath("."))
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: state.parseExprFromFile(resolveExprPath(lookupFileArg(state, i)));
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processExpr(state, attrPaths, parseOnly, strict, autoArgs,
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evalOnly, outputKind, xmlOutputSourceLocation, e);
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}
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