Make <nix/unpack-channel.nix> a builtin builder

This was the last function using a shell script, so this allows us to
get rid of tar, coreutils, bash etc.

1 files changed, 4 insertions, 31 deletions

diff --git a/corepkgs/unpack-channel.nix b/corepkgs/unpack-channel.nix
index d39a20637..10515bc8b 100644
--- a/corepkgs/unpack-channel.nix
+++ b/corepkgs/unpack-channel.nix
@@ -1,39 +1,12 @@
-with import <nix/config.nix>;
-
-let
-
-  builder = builtins.toFile "unpack-channel.sh"
-    ''
-      mkdir $out
-      cd $out
-      xzpat="\.xz\$"
-      gzpat="\.gz\$"
-      if [[ "$src" =~ $xzpat ]]; then
-        ${xz} -d < $src | ${tar} xf - ${tarFlags}
-      elif [[ "$src" =~ $gzpat ]]; then
-        ${gzip} -d < $src | ${tar} xf - ${tarFlags}
-      else
-        ${bzip2} -d < $src | ${tar} xf - ${tarFlags}
-      fi
-      if [ * != $channelName ]; then
-        mv * $out/$channelName
-      fi
-    '';
-
-in
-
 { name, channelName, src }:
 
 derivation {
-  system = builtins.currentSystem;
-  builder = shell;
-  args = [ "-e" builder ];
-  inherit name channelName src;
+  builder = "builtin:unpack-channel";
+
+  system = "builtin";
 
-  PATH = "${nixBinDir}:${coreutils}";
+  inherit name channelName src;
 
   # No point in doing this remotely.
   preferLocalBuild = true;
-
-  inherit chrootDeps;
 }