pkgs: Add new script git-detach

It's a small helper tool which I specifically use for running NixOS
tests (especially the installer ones) that require <nixpkgs> to be
copied to the store.

What git-detach does is creating a temporary working directory which
only contains a trimmed-down (without untracked files and .git
directory) version of the current Git repository.

So in case of <nixpkgs> this is especially useful to keep down the
closure size whenever the working dir is going to be exported to the
store.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/pkgs/default.nix b/pkgs/default.nix
index 674ae29d..074f1130 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -10,6 +10,7 @@ let
     axbo = callPackage ./axbo { };
     beehive = callPackage ./beehive { };
     blop = callPackage ./blop { };
+    git-detach = callPackage ./git-detach { };
     grandpa = callPackage ./grandpa { };
     greybird-xfce-theme = callPackage ./greybird-xfce-theme { };
     nixops = callPackage ./nixops { };