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Remove flake-parts dependency #37

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Merged
srid merged 1 commit into from
Oct 17, 2025
Merged

Remove flake-parts dependency #37

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37 changes: 0 additions & 37 deletions flake.lock
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140 changes: 71 additions & 69 deletions flake.nix
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Original file line number Diff line number Diff line change
@@ -1,82 +1,84 @@
{
inputs = {
flake-parts.url = "github:hercules-ci/flake-parts";
# The systems to build for. If empty, build for current system.
systems.url = "github:srid/empty";
flake = { };
};
outputs = inputs:
inputs.flake-parts.lib.mkFlake { inherit inputs; } {
systems = [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin" ];
perSystem = { self', pkgs, lib, system, ... }: {
_module.args.pkgs = import inputs.flake.inputs.nixpkgs { inherit system; };
packages =
let
build-systems =
let systems = import inputs.systems;
in if systems == [ ] then [ system ] else systems;
shouldBuildOn = s: lib.elem s build-systems;
getSystem = cfg:
cfg.pkgs.stdenv.hostPlatform.system;
configForCurrentSystem = cfg:
shouldBuildOn (getSystem cfg);
# Given a flake output key, how to get the buildable derivation for
# any of its attr values?
flakeSchema = {
perSystem = {
# -> [ path ]
lookupFlake = k: flake:
lib.flip builtins.map build-systems (sys:
lib.attrByPath [ k sys ] { } flake
);
getDrv = {
packages = _: x: [ x ];
checks = _: x: [ x ];
devShells = _: x: [ x ];
apps = _: app: [ app.program ];
legacyPackages = k: v:
if k == "homeConfigurations"
then
lib.mapAttrsToList (_: cfg: cfg.activationPackage) v
else [ ];
};
};
flake = {
lookupFlake = k: flake: [ (lib.attrByPath [ k ] { } flake) ];
getDrv = {
nixosConfigurations = _: cfg:
lib.optional (configForCurrentSystem cfg) cfg.config.system.build.toplevel;
darwinConfigurations = _: cfg:
lib.optional (configForCurrentSystem cfg) cfg.config.system.build.toplevel;
};
let
allSystems = [ "x86_64-linux" "aarch64-linux" "aarch64-darwin" "x86_64-darwin" ];
forAllSystems = f: builtins.listToAttrs (map (system: { name = system; value = f system; }) allSystems);
in
{
packages = forAllSystems (system:
let
pkgs = import inputs.flake.inputs.nixpkgs { inherit system; };
lib = pkgs.lib;
build-systems =
let systems = import inputs.systems;
in if systems == [ ] then [ system ] else systems;
shouldBuildOn = s: lib.elem s build-systems;
getSystem = cfg:
cfg.pkgs.stdenv.hostPlatform.system;
configForCurrentSystem = cfg:
shouldBuildOn (getSystem cfg);
# Given a flake output key, how to get the buildable derivation for
# any of its attr values?
flakeSchema = {
perSystem = {
# -> [ path ]
lookupFlake = k: flake:
lib.flip builtins.map build-systems (sys:
lib.attrByPath [ k sys ] { } flake
);
getDrv = {
packages = _: x: [ x ];
checks = _: x: [ x ];
devShells = _: x: [ x ];
apps = _: app: [ app.program ];
legacyPackages = k: v:
if k == "homeConfigurations"
then
lib.mapAttrsToList (_: cfg: cfg.activationPackage) v
else [ ];
};
};
paths =
lib.flip lib.mapAttrsToList flakeSchema (_: lvlSchema:
lib.flip lib.mapAttrsToList lvlSchema.getDrv (kind: getDrv:
builtins.concatMap
(attr: lib.mapAttrsToList getDrv attr)
(lvlSchema.lookupFlake kind inputs.flake)
)
);
nameForStorePath = path:
if builtins.typeOf path == "set"
then path.pname or path.name or null
else null;
result = rec {
outPaths = lib.lists.flatten paths;
# Indexed by the path's unique name
# Paths without such a name will be ignored. Hence, you must rely on `out_paths` for comprehensive list of outputs.
byName = lib.foldl' (acc: path:
let name = nameForStorePath path;
in if name == null then acc else acc // { "${name}" = path; }
) { } outPaths;
flake = {
lookupFlake = k: flake: [ (lib.attrByPath [ k ] { } flake) ];
getDrv = {
nixosConfigurations = _: cfg:
lib.optional (configForCurrentSystem cfg) cfg.config.system.build.toplevel;
darwinConfigurations = _: cfg:
lib.optional (configForCurrentSystem cfg) cfg.config.system.build.toplevel;
};
};
in
rec {
json = pkgs.writeText "devour-output.json" (builtins.toJSON result);
default = pkgs.writeText "devour-output" (lib.strings.concatLines result.outPaths);
};
};
paths =
lib.flip lib.mapAttrsToList flakeSchema (_: lvlSchema:
lib.flip lib.mapAttrsToList lvlSchema.getDrv (kind: getDrv:
builtins.concatMap
(attr: lib.mapAttrsToList getDrv attr)
(lvlSchema.lookupFlake kind inputs.flake)
)
);
nameForStorePath = path:
if builtins.typeOf path == "set"
then path.pname or path.name or null
else null;
result = rec {
outPaths = lib.lists.flatten paths;
# Indexed by the path's unique name
# Paths without such a name will be ignored. Hence, you must rely on `out_paths` for comprehensive list of outputs.
byName = lib.foldl' (acc: path:
let name = nameForStorePath path;
in if name == null then acc else acc // { "${name}" = path; }
) { } outPaths;
};
in
rec {
json = pkgs.writeText "devour-output.json" (builtins.toJSON result);
default = pkgs.writeText "devour-output" (lib.strings.concatLines result.outPaths);
}
);
};
}