closureInfo: Report the total closure size.

This can be useful for e.g. preallocating disk image sizes.
2018-02-23 10:52:37 -05:00 · 2018-02-23 10:52:37 -05:00 · adf8074abe
commit adf8074abe
parent d12c9911df
1 changed files with 1 additions and 0 deletions
--- a/pkgs/build-support/closure-info.nix
+++ b/pkgs/build-support/closure-info.nix
@ -27,6 +27,7 @@ stdenv.mkDerivation {

      mkdir $out

+      jq -r ".closure | map(.narSize) | add" < .attrs.json > $out/total-nar-size
      jq -r '.closure | map([.path, .narHash, .narSize, "", (.references | length)] + .references) | add | map("\(.)\n") | add' < .attrs.json | head -n -1 > $out/registration
      jq -r .closure[].path < .attrs.json > $out/store-paths
    '';