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The double system
nix-repl> p = nosys inputs ({disko, ...}: {inherit (disko) packages;})
nix-repl> p.packages.
p.packages.aarch64-darwin p.packages.x86_64-darwin
p.packages.aarch64-linux p.packages.x86_64-linux
nix-repl> p.packages.x86_64-darwin.x86_64-linux.
p.packages.x86_64-darwin.x86_64-linux.default
p.packages.x86_64-darwin.x86_64-linux.disko`__system` is "from the end to the beginning" complexity
If we don't strictly need it, I'd leave it out due to it introducing fixed point logic in the implementation and somehow that makes it even more magical than what it already is (actually not really that much, fortunately) ...
😄
`std` packages aren't `desystemized`
while #4 is a correct fix, std.packages aren't desystemized within f:
Packages aren't hoisted:
nix-repl> p = inputs.nosys inputs ({std, ...}: {_std = std; inherit (std) _automation; packages = builtins.trace "${builtins.concat
StringsSep " - " (builtins.attrNames std.packages)}" std.packages;})
nix-repl> p.packages
{ aarch64-darwin = trace: aarch64-darwin - aarch64-linux - x86_64-darwin - x86_64-linux
{ ... }; aarch64-linux = trace: aarch64-darwin - aarch64-linux - x86_64-darwin - x86_64-linux
{ ... }; x86_64-darwin = trace: aarch64-darwin - aarch64-linux - x86_64-darwin - x86_64-linux
{ ... }; x86_64-linux = trace: aarch64-darwin - aarch64-linux - x86_64-darwin - x86_64-linux
{ ... }; }
Packages are still under their system:
nix-repl> p = inputs.nosys inputs ({std, ...}: {_std = std; inherit (std) _automation; packages = builtins.trace "${builtins.concat
StringsSep " - " (builtins.attrNames std.packages.x86_64-linux)}" std.packages;})
nix-repl> p.packages
{ aarch64-darwin = trace: adrgen - default - mdbook - mdbook-kroki-preprocessor
{ ... }; aarch64-linux = trace: adrgen - default - mdbook - mdbook-kroki-preprocessor
{ ... }; x86_64-darwin = trace: adrgen - default - mdbook - mdbook-kroki-preprocessor
{ ... }; x86_64-linux = trace: adrgen - default - mdbook - mdbook-kroki-preprocessor
{ ... }; }
Issues using this library
My flake.nix and outputs.nix file look exactly like the README but with the additional nixpkgs input for outputs.nix. But I get the error
error: flake git+/path/to/folder does not provide attribute 'packages.x86_64-linux.default' or 'defaultPackage.x86_64-linux'
Why is that the case? I do not understand the problem here. I thought nosys provides the nixpkgs instance for me.
#flake.nix
{
inputs.nosys.url = "github:divnix/nosys";
inputs.systems.url = "path:./flake/systems.nix";
inputs.systems.flake = false;
outputs = inputs @ {
nosys,
nixpkgs, # <---- This `nixpkgs` still has the `system` e.g. legacyPackages.${system}.zlib
...}: let
outputs = import ./flake/outputs.nix;
in
nosys inputs outputs;
}
# outputs.nix
{
self
, nixpkgs
, ...
}: let
inherit (nixpkgs.legacyPackages) pkgs;
in {
# system dependant outputs
devShells.default = self.devShells.dev;
devShells.dev = pkgs.mkShell {
buildInputs = with pkgs; [/* ... */];
};
}
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