aynish/nix-starter-configs
1
0
Fork 0
Code Issues Pull requests Packages Projects Releases Wiki Activity

couple improvements in shell.nix

Browse source
This commit is contained in:
Gabriel Fontes 2022-04-29 17:25:38 -03:00
parent fa0748a598
commit a4d2b03b3c
No known key found for this signature in database
GPG key ID: 2E54EA7BFE630916
1 changed files with 11 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
shell.nix
View file

@ -1,16 +1,17 @@
# Shell for bootstrapping flake-enabled nix and home-manager, from any nix version
{ pkgs ? let
system = builtins.currentSystem or "Unknown system";
inherit (builtins) currentSystem pathExists fromJSON readFile;
nixpkgs =
if builtins.pathExists ./flake.lock
if pathExists ./flake.lock
then
# If we have a lock, fetch locked nixpkgs
let lock = (builtins.fromJSON (builtins.readFile ./flake.lock)).nodes.nixpkgs.locked;
let
inherit ((fromJSON (readFile ./flake.lock)).nodes.nixpkgs) locked;
in
fetchTarball {
url = "https://github.com/nixos/nixpkgs/archive/${lock.rev}.tar.gz";
sha256 = lock.narHash;
url = "https://github.com/nixos/nixpkgs/archive/${locked.rev}.tar.gz";
sha256 = locked.narHash;
}
else
# If not (probably because not flake-enabled), fetch nixos-unstable impurely
@ -18,13 +19,16 @@
url = "https://github.com/nixos/nixpkgs/archive/nixos-unstable.tar.gz";
};
system = currentSystem;
overlays = [ ];
in
import nixpkgs { inherit system; }
import nixpkgs { inherit system overlays; }
, ...
}:
let
# Enable experimental features without having to specify the argument
nix = (pkgs.writeShellScriptBin) "nix" ''
nix = pkgs.writeShellScriptBin "nix" ''
exec ${pkgs.nixFlakes}/bin/nix --experimental-features "nix-command flakes" "$@"
'';
in