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23
pkgs/overlays/unstable.nix
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@ -2,20 +2,11 @@ self: super:
let
nixos = self.config.nixos or true;
unstableRevision = self.config.unstableRevision or null;
unstableRevisionHash = self.config.unstableRevisionHash or null;
useUnstable = self.config.useUnstable or true;
unstablePkgsExprs = if !builtins.isNull unstableRevision
then if !builtins.isNull unstableRevisionHash
then builtins.fetchTarball {
url = "https://github.com/NixOS/nixpkgs/archive/${unstableRevision}.tar.gz";
sha256 = unstableRevisionHash;
}
else builtins.fetchTarball "https://github.com/NixOS/nixpkgs/archive/${unstableRevision}.tar.gz"
else if nixos
then builtins.fetchTarball "https://channels.nixos.org/nixos-unstable/nixexprs.tar.xz"
else builtins.fetchTarball "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.xz";
unstablePkgsExprs = if nixos
then builtins.fetchTarball "https://channels.nixos.org/nixos-unstable/nixexprs.tar.xz"
else builtins.fetchTarball "https://channels.nixos.org/nixpkgs-unstable/nixexprs.tar.xz";
# Compiled nixpkgs expression eg expressions from a nix channel
nixpkgsVersion = builtins.concatStringsSep "." [
@ -25,10 +16,10 @@ let
nixpkgsRevision = (builtins.readFile "${unstablePkgsExprs}/.git-revision");
unstablePkgsForNixpkgs = nixpkgs: import unstablePkgsExprs {
# localSystem -> pkgs.stdenv.buildPlatform
localSystem = nixpkgs.stdenv.buildPlatform;
# crossSystem -> pkgs.stdenv.hostPlatform or pkgs.stdenv.targetPlatform ??
crossSystem = nixpkgs.stdenv.hostPlatform;
# localSystem -> pkgs.stdenv.hostPlatform or pkgs.stdenv.hostPlatform ???
localSystem = nixpkgs.stdenv.hostPlatform;
# crossSystem -> nixpkgs.stdenv.targetPlatform
crossSystem = nixpkgs.stdenv.targetPlatform;
# config -> pkgs.config
config = nixpkgs.config;
# overlays -> partial of pkgs.overlays