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authorEelco Dolstra <e.dolstra@tudelft.nl>2006-02-10T17·25+0000
committerEelco Dolstra <e.dolstra@tudelft.nl>2006-02-10T17·25+0000
commitc6120352b3fd25380ff21726982e22b97ee43e0b (patch)
tree5d8ac14dd44ef25ea0bf3a53490dbe9f31969793 /src/libexpr/get-drvs.hh
parentb505f9eaf57c7badeacb176a1946b5f5f145f816 (diff)
* In nix-instantiate, allow us to specify a "path" to the
  derivation(s) we're interested, e.g.,

    $ nix-instantiate ./all-packages.nix --attr xlibs.libX11

  List elements can also be selected:

    $ nix-instantiate ./build-for-release.nix --attr 0.subversion

  This allows a non-ambiguous specification of a derivation.  Of
  course, this should also be added to nix-env and nix-build.

Diffstat (limited to 'src/libexpr/get-drvs.hh')
-rw-r--r--src/libexpr/get-drvs.hh3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/libexpr/get-drvs.hh b/src/libexpr/get-drvs.hh
index bfcff8cca3..5b1c0e6d4c 100644
--- a/src/libexpr/get-drvs.hh
+++ b/src/libexpr/get-drvs.hh
@@ -58,7 +58,8 @@ typedef list<DrvInfo> DrvInfos;
    Otherwise, return false. */
 bool getDerivation(EvalState & state, Expr e, DrvInfo & drv);
 
-void getDerivations(EvalState & state, Expr e, DrvInfos & drvs);
+void getDerivations(EvalState & state, Expr e, DrvInfos & drvs,
+    const string & attrPath = "");
 
 
 #endif /* !__GET_DRVS_H */