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flake-parts/modules/apps.nix

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Nix
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{ config, lib, flake-parts-lib, ... }:
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let
inherit (lib)
mkOption
types
;
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inherit (flake-parts-lib)
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mkTransposedPerSystemModule
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;
programType = lib.types.coercedTo derivationType getExe lib.types.str;
derivationType = lib.types.package // {
check = lib.isDerivation;
};
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getExe = x:
"${lib.getBin x}/bin/${x.meta.mainProgram or (throw ''Package ${x.name or ""} does not have meta.mainProgram set, so I don't know how to find the main executable. You can set meta.mainProgram, or pass the full path to executable, e.g. program = "''${pkg}/bin/foo"'')}";
getBin = x:
if !x?outputSpecified || !x.outputSpecified
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then x.bin or x.out or x
else x;
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appType = lib.types.submodule {
options = {
type = mkOption {
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type = lib.types.enum [ "app" ];
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default = "app";
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description = lib.mdDoc ''
A type tag for `apps` consumers.
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'';
};
program = mkOption {
type = programType;
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description = lib.mdDoc ''
A path to an executable or a derivation with `meta.mainProgram`.
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'';
};
};
};
in
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mkTransposedPerSystemModule {
name = "apps";
option = mkOption {
type = types.lazyAttrsOf appType;
default = { };
description = ''
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Programs runnable with nix run `<name>`.
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'';
example = lib.literalExpression or lib.literalExample ''
{
default.program = "''${config.packages.hello}/bin/hello";
}
'';
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};
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file = ./apps.nix;
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}