···

       
14
       
14
       
 
       
date="$(date "--date=$(jq -r .commit.commit.committer.date <<< "$head_info")" +%F)"

     

       
15
       
15
       
 
       
# generate nix expression from cabal file, replacing the version with the commit date

     

       
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echo '# This file defines cabal2nix-latest, used by maintainers/scripts/haskell/regenerate-hackage-packages.sh.' > pkgs/development/haskell-modules/cabal2nix-latest.nix

     

       
17
       
17
       
-
       
cabal2nix "https://github.com/NixOS/cabal2nix/archive/$commit.tar.gz" | sed -e 's/version = ".*"/version = "'"$date"'"/' >> pkgs/development/haskell-modules/cabal2nix-latest.nix

     

       
17
       
17
       
+
       
cabal2nix "https://github.com/NixOS/cabal2nix/archive/$commit.tar.gz" | sed -e 's/version = ".*"/version = "'"unstable-$date"'"/' >> pkgs/development/haskell-modules/cabal2nix-latest.nix

     

···

       
8
       
8
       
 
       
}:

     

       
9
       
9
       
 
       
mkDerivation {

     

       
10
       
10
       
 
       
  pname = "cabal2nix";

     

       
11
       
11
       
-
       
  version = "2021-05-01";

     

       
11
       
11
       
+
       
  version = "unstable-2021-05-01";

     

       
12
       
12
       
 
       
  src = fetchzip {

     

       
13
       
13
       
 
       
    url = "https://github.com/NixOS/cabal2nix/archive/849a3507c849e3e2331efbc5ebe391b70a215ddc.tar.gz";

     

       
14
       
14
       
 
       
    sha256 = "0g91d2bd72l3kkykc47a2raymvgw6427n7cg9ayzvrpldkd0silc";