127 lines
3.9 KiB
Nix
127 lines
3.9 KiB
Nix
{
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flake-parts-lib,
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inputs,
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...
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}: {
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flake = {
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templates = {
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build123d = {
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path = ./template;
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description = "A python flake with a build132d/cadquery parametric cad setup";
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};
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};
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flakeModules.build123d = {
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imports = [
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inputs.treefmt-nix.flakeModule
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];
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options.perSystem = flake-parts-lib.mkPerSystemOption ({
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lib,
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config,
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pkgs,
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self',
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system,
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...
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}: let
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cfg = config.krantz.build123d;
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cq = inputs.cadquery.packages.${system};
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pyEnv = cq.python3.withPackages (p:
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with p; [
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cadquery
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build123d
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]);
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in {
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options.krantz.build123d = {
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enable = lib.mkEnableOption "executing a python build123d/cadquery file to get a 3d file";
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objectName = lib.mkOption {
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description = "What to name this object.";
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type = lib.types.str;
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example = "box";
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};
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builder = lib.mkOption {
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description = "The path to python cad script that generates the 3d file.";
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type = lib.types.path;
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example = lib.literalExpression "./build3d.py";
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};
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outputFileName = lib.mkOption {
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description = "The name of the 3d file the builder script will output. After the builder is run this file must appear in the current working directory.";
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type = lib.types.str;
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default = "output.step";
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};
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devShell = {
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enable = lib.mkEnableOption "a build123d development environment" // {default = true;};
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name = lib.mkOption {
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description = "The name of the attribute in devShells to configure";
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type = lib.types.str;
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default = "default";
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example = "build123d";
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};
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extraAttrs = lib.mkOption {
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description = "Extra attributes to merge into the devshell. See https://nixos.org/manual/nixpkgs/stable/#sec-pkgs-mkShell";
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type = lib.types.attrs;
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default = {};
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example = {
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shellHook = ''
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export DEBUG=1
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'';
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};
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};
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};
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package = {
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enable = lib.mkEnableOption "a package output for the 3d file" // {default = true;};
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name = lib.mkOption {
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description = "The name of the attribute in packages to configure";
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type = lib.types.str;
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default = "default";
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example = "step";
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};
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};
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};
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config = lib.mkIf cfg.enable {
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# Dev Shell that lets you enter an environment with all the necessary utilites
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# Available through 'nix develop'
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# Also can be activated automatically if direnv is installed on the system with 'direnv allow'
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devShells.${cfg.devShell.name} = lib.mkIf cfg.devShell.enable (pkgs.mkShell {
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packages = [
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pyEnv
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];
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}
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// cfg.devShell.extraAttrs);
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# Formatter for nix files, available through 'nix fmt'
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treefmt = {
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programs.alejandra.enable = lib.mkDefault true;
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};
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# Your custom packages
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# Accessible through 'nix build', 'nix shell', 'nix run', etc
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packages.${cfg.package.name} = lib.mkIf cfg.package.enable (pkgs.runCommand cfg.objectName {}
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/*
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bash
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*/
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''
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RESULT_FILE_NAME=${cfg.objectName}.${lib.last (lib.splitString "." cfg.outputFileName)}
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${pyEnv}/bin/python ${cfg.builder}
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mkdir $out
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mv ${cfg.outputFileName} $out/$RESULT_FILE_NAME
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ln -s ./$RESULT_FILE_NAME $out/${cfg.outputFileName}
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'');
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};
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});
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};
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};
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}
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