* 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, 13 insertions, 0 deletions

diff --git a/tests/filter-source.sh b/tests/filter-source.sh
new file mode 100644
index 000000000000..4880969ba7ad
--- /dev/null
+++ b/tests/filter-source.sh
@@ -0,0 +1,13 @@
+source common.sh
+
+rm -rf $TEST_ROOT/filterin
+mkdir $TEST_ROOT/filterin
+mkdir $TEST_ROOT/filterin/foo
+touch $TEST_ROOT/filterin/foo/bar
+touch $TEST_ROOT/filterin/xyzzy
+
+$NIX_BIN_DIR/nix-build ./filter-source.nix -o $TEST_ROOT/filterout
+
+set -x
+test ! -e $TEST_ROOT/filterout/foo/bar
+test -e $TEST_ROOT/filterout/xyzzy