* New primop builtins.filterSource, which can be used to filter files

  from a source directory.  All files for which a predicate function
  returns true are copied to the store.  Typical example is to leave
  out the .svn directory:

    stdenv.mkDerivation {
      ...
      src = builtins.filterSource
        (path: baseNameOf (toString path) != ".svn")
        ./source-dir;
      # as opposed to
      #   src = ./source-dir;
    }

  This is important because the .svn directory influences the hash in
  a rather unpredictable and variable way.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/libstore/store-api.cc b/src/libstore/store-api.cc
index 677c3ca3e909..be9ea788bc20 100644
--- a/src/libstore/store-api.cc
+++ b/src/libstore/store-api.cc
@@ -94,9 +94,9 @@ Path makeFixedOutputPath(bool recursive,
 
 
 std::pair<Path, Hash> computeStorePathForPath(const Path & srcPath,
-    bool fixed, bool recursive, string hashAlgo)
+    bool fixed, bool recursive, string hashAlgo, PathFilter & filter)
 {
-    Hash h = hashPath(htSHA256, srcPath);
+    Hash h = hashPath(htSHA256, srcPath, filter);
 
     string baseName = baseNameOf(srcPath);
 
@@ -104,7 +104,7 @@ std::pair<Path, Hash> computeStorePathForPath(const Path & srcPath,
     
     if (fixed) {
         HashType ht(parseHashType(hashAlgo));
-        Hash h2 = recursive ? hashPath(ht, srcPath) : hashFile(ht, srcPath);
+        Hash h2 = recursive ? hashPath(ht, srcPath, filter) : hashFile(ht, srcPath);
         dstPath = makeFixedOutputPath(recursive, hashAlgo, h2, baseName);
     }