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| author | Eelco Dolstra <e.dolstra@tudelft.nl> | 2004-01-05 16:26:43 +0000 |
|---|---|---|
| committer | Eelco Dolstra <e.dolstra@tudelft.nl> | 2004-01-05 16:26:43 +0000 |
| commit | 4a373a3e9ac07a2d4c43d495c0a44883106ecfde (patch) | |
| tree | 27f4e22f8d3573bfe1ebba1acfa2e46a735fecee /src/libexpr | |
| parent | f83c5e3e5f3e6b33c095d6559a4b3cd5922e88ce (diff) | |
* Implemented Eelco V.'s `nix-env -I' command to specify the default
path of the Nix expression to be used with the import, upgrade, and
query commands. For instance,
$ nix-env -I ~/nixpkgs/pkgs/system/i686-linux.nix
$ nix-env --query --available [aka -qa]
sylpheed-0.9.7
bison-1.875
pango-1.2.5
subversion-0.35.1
...
$ nix-env -i sylpheed
$ nix-env -u subversion
There can be only one default at a time.
* If the path to a Nix expression is a symlink, follow the symlink
prior to resolving relative path references in the expression.
Diffstat (limited to 'src/libexpr')
| -rw-r--r-- | src/libexpr/parser.cc | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/src/libexpr/parser.cc b/src/libexpr/parser.cc index aecfa4348..b9e79e13d 100644 --- a/src/libexpr/parser.cc +++ b/src/libexpr/parser.cc @@ -29,16 +29,12 @@ struct Cleanup : TermFun ATMatcher m; string s; - if (atMatch(m, e) >> "Str" >> s) { + if (atMatch(m, e) >> "Str" >> s) return ATmake("Str(<str>)", string(s, 1, s.size() - 2).c_str()); - } - if (atMatch(m, e) >> "Path" >> s) { - if (s[0] != '/') - s = basePath + "/" + s; - return ATmake("Path(<str>)", canonPath(s).c_str()); - } + if (atMatch(m, e) >> "Path" >> s) + return ATmake("Path(<str>)", absPath(s, basePath).c_str()); if (atMatch(m, e) >> "Int" >> s) { istringstream s2(s); @@ -147,8 +143,14 @@ Expr parseExprFromFile(Path path) if (e) return e; #endif - /* If `path' refers to a directory, append `/default.nix'. */ + /* If `path' is a symlink, follow it. This is so that relative + path references work. */ struct stat st; + if (lstat(path.c_str(), &st)) + throw SysError(format("getting status of `%1%'") % path); + if (S_ISLNK(st.st_mode)) path = absPath(readLink(path), dirOf(path)); + + /* If `path' refers to a directory, append `/default.nix'. */ if (stat(path.c_str(), &st)) throw SysError(format("getting status of `%1%'") % path); if (S_ISDIR(st.st_mode)) |