Add fetchTree builtin function

This allows all supported fetchers to be used, e.g.

  builtins.fetchTree {
    type = "github";
    owner = "NixOS";
    repo = "nix";
    rev = "d4df99a3349cf2228a8ee78dea320afef86eb3ba";
  }

1 files changed, 6 insertions, 0 deletions

diff --git a/tests/tarball.sh b/tests/tarball.sh
index 8adb8d72f..7c8896b2e 100644
--- a/tests/tarball.sh
+++ b/tests/tarball.sh
@@ -10,6 +10,8 @@ mkdir -p $tarroot
 cp dependencies.nix $tarroot/default.nix
 cp config.nix dependencies.builder*.sh $tarroot/
 
+hash=$(nix hash-path $tarroot)
+
 test_tarball() {
     local ext="$1"
     local compressor="$2"
@@ -25,6 +27,10 @@ test_tarball() {
 
     nix-build -o $TEST_ROOT/result -E "import (fetchTarball file://$tarball)"
 
+    nix-build -o $TEST_ROOT/result -E "import (fetchTree file://$tarball)"
+    nix-build -o $TEST_ROOT/result -E "import (fetchTree { type = \"tarball\"; url = file://$tarball; })"
+    nix-build -o $TEST_ROOT/result -E "import (fetchTree { type = \"tarball\"; url = file://$tarball; narHash = \"$hash\"; })"
+
     nix-instantiate --eval -E '1 + 2' -I fnord=file://no-such-tarball.tar$ext
     nix-instantiate --eval -E 'with <fnord/xyzzy>; 1 + 2' -I fnord=file://no-such-tarball$ext
     (! nix-instantiate --eval -E '<fnord/xyzzy> 1' -I fnord=file://no-such-tarball$ext)