nixpkgs/pkgs/tools/misc/nix-direnv/default.nix

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{ lib, stdenv, fetchFromGitHub, gnugrep, nix }:
stdenv.mkDerivation rec {
pname = "nix-direnv";
version = "1.0.0";
src = fetchFromGitHub {
owner = "nix-community";
repo = "nix-direnv";
rev = "${version}";
sha256 = "1lwmg6mn3lf7s0345v53zadxn9v0x8z6pcbj90v5dx3pgrq41gs8";
};
# Substitute instead of wrapping because the resulting file is
# getting sourced, not executed:
postPatch = ''
substituteInPlace direnvrc \
--replace "grep" "${gnugrep}/bin/grep" \
--replace "nix-shell" "${nix}/bin/nix-shell" \
--replace "nix-instantiate" "${nix}/bin/nix-instantiate"
'';
installPhase = ''
runHook preInstall
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install -m500 -D direnvrc $out/share/nix-direnv/direnvrc
runHook postInstall
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'';
meta = with stdenv.lib; {
description = "A fast, persistent use_nix implementation for direnv";
homepage = "https://github.com/nix-community/nix-direnv";
license = licenses.mit;
platforms = platforms.unix;
};
}