tjh.dev
nixpkgs mirror (for testing)
github.com/NixOS/nixpkgs
nix
1{
2 stdenv,
3 lib,
4 fetchurl,
5 readline,
6 enableCurrenciesUpdater ? true,
7 pythonPackages ? null
8}:
9
10assert enableCurrenciesUpdater -> pythonPackages != null;
11
12let pythonEnv = pythonPackages.python.withPackages(ps: [
13 ps.requests
14 ]);
15in stdenv.mkDerivation rec {
16 pname = "units";
17 version = "2.22";
18
19 src = fetchurl {
20 url = "mirror://gnu/units/${pname}-${version}.tar.gz";
21 sha256 = "sha256-XRPhIHch/ncm2Qa6HZLcDt2qn8JnWe0i47jRp5MSWEg=";
22 };
23
24 buildInputs = [ readline ]
25 ++ lib.optionals enableCurrenciesUpdater [
26 pythonEnv
27 ]
28 ;
29 prePatch = lib.optionalString enableCurrenciesUpdater ''
30 substituteInPlace units_cur \
31 --replace "#!/usr/bin/env python" ${pythonEnv}/bin/python
32 '';
33 postInstall = ''
34 cp units_cur ${placeholder "out"}/bin/
35 '';
36
37 doCheck = true;
38
39 meta = with lib; {
40 description = "Unit conversion tool";
41 homepage = "https://www.gnu.org/software/units/";
42 license = [ licenses.gpl3Plus ];
43 platforms = platforms.all;
44 maintainers = [ maintainers.vrthra ];
45 };
46}