nixpkgs/pkgs/tools/misc/nix-direnv/default.nix
Luke Worth 03310df843
nix-direnv: make flakes support optional
`nix-direnv` depends on `nixUnstable` for flakes support, but that
causes it to print a warning unless your user is trusted or the
`experimental-features` setting is enabled. Neither of these are
desirable (note that setting `experimental-features` in nix.conf causes
warnings on `nixStable`).

Since flakes are experimental, this commit makes `nixStable` the default
and optionally allows `nixUnstable` with a new flag `enableFlakes`,
prioritising a good experience for users not using experimental
features.
2021-06-08 10:54:07 +10:00

45 lines
1 KiB
Nix

{ lib
, stdenv
, fetchFromGitHub
, gnugrep
, nixStable
, nixUnstable
, enableFlakes ? false
}:
let
nix = if enableFlakes then nixUnstable else nixStable;
in
stdenv.mkDerivation rec {
pname = "nix-direnv";
version = "1.2.6";
src = fetchFromGitHub {
owner = "nix-community";
repo = "nix-direnv";
rev = version;
sha256 = "sha256-0dCIHgoyNgpxbrPDv26oLdU+npcIgpCQdpX4HzS0vN0=";
};
# Substitute instead of wrapping because the resulting file is
# getting sourced, not executed:
postPatch = ''
sed -i "1a NIX_BIN_PREFIX=${nix}/bin/" direnvrc
substituteInPlace direnvrc --replace "grep" "${gnugrep}/bin/grep"
'';
installPhase = ''
runHook preInstall
install -m500 -D direnvrc $out/share/nix-direnv/direnvrc
runHook postInstall
'';
meta = with lib; {
description = "A fast, persistent use_nix implementation for direnv";
homepage = "https://github.com/nix-community/nix-direnv";
license = licenses.mit;
platforms = platforms.unix;
maintainers = with maintainers; [ mic92 ];
};
}