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

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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.
This commit is contained in:
Eelco Dolstra 2006-12-12 23:05:01 +00:00
parent b438d37558
commit a3e6415ba8
19 changed files with 143 additions and 68 deletions
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6
src/libstore/store-api.cc
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@ -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);
}