comma/default.nix
DavHau 54149dc417
flake compatibility + index management (#11)
* compatibility to flake based systems

  - add flake.nix
  - provide interface for updating the index

* pin nix to version 2.3

* Update ,

Co-authored-by: Artturi <Artturin@artturin.com>

* remove db outdated error

Co-authored-by: Artturi <Artturin@artturin.com>
2022-02-17 14:06:02 +07:00

61 lines
1.7 KiB
Nix

{ pkgs ? import <nixpkgs> { }
, stdenv ? pkgs.stdenv
, lib ? pkgs.lib
, fetchurl ? pkgs.fetchurl
, nix-index ? pkgs.nix-index
, nix ? pkgs.nix
, fzy ? pkgs.fzy
, makeWrapper ? pkgs.makeWrapper
, runCommand ? pkgs.runCommand
, updateScript ? import ./update-index.nix { inherit pkgs; }
, linkFarm ? pkgs.linkFarm
# We use this to add matchers for stuff that's not in upstream nixpkgs, but is
# in our own overlay. No fuzzy matching from multiple options here, it's just:
# Was the command `, mything`? Run `nixpkgs.mything`.
, overlayPackages ? []
}:
let
# nix-index takes a little while to run and the contents don't change
# meaningfully very often.
indexCache = fetchurl {
url = "https://github.com/Mic92/nix-index-database/releases/download/2021-12-12/index-x86_64-linux";
sha256 = "sha256-+SoG5Qz2KWA/nIWXE6SLpdi8MDqTs8LY90fGZxGKOiA=";
};
# nix-locate needs the --db argument to be a directory containing a file
# named "files".
nixIndexDB = linkFarm "nix-index-cache" [
{ name = "files"; path = indexCache; }
];
in
stdenv.mkDerivation rec {
name = "comma";
src = ./.;
buildInputs = [ nix-index nix fzy ];
nativeBuildInputs = [ makeWrapper ];
installPhase = let
caseCondition = lib.concatStringsSep "|" (overlayPackages ++ [ "--placeholder--" ]);
in ''
mkdir -p $out/bin
sed -e 's/@OVERLAY_PACKAGES@/${caseCondition}/' < , > $out/bin/,
chmod +x $out/bin/,
wrapProgram $out/bin/, \
--set PREBUILT_NIX_INDEX_DB ${nixIndexDB} \
--set NIXPKGS ${pkgs.path} \
--set UPDATE_SCRIPT ${updateScript} \
--prefix PATH : ${nix-index}/bin \
--prefix PATH : ${nix}/bin \
--prefix PATH : ${fzy}/bin
ln -s $out/bin/, $out/bin/comma
'';
}