76 lines
2.6 KiB
Nix
76 lines
2.6 KiB
Nix
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{ maintainer
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, localSystem ? { system = args.system or builtins.currentSystem; }
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, system ? localSystem.system
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, crossSystem ? localSystem
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, ...
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}@args:
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# based on update.nix
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# nix-build build.nix --argstr maintainer <yourname>
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# to build for aarch64-linux using boot.binfmt.emulatedSystems:
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# nix-build build.nix --argstr maintainer <yourname> --argstr system aarch64-linux
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let
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# This avoids a common situation for maintainers, where due to Git's behavior of not tracking
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# directories, they have an empty directory somewhere in `pkgs/by-name`. Because that directory
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# exists, `pkgs/top-level/by-name-overlay.nix` picks it up and attempts to read `package.nix` out
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# of it... which doesn't exist, since it's empty.
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#
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# We don't want to run the code below on every instantiation of `nixpkgs`, as the `pkgs/by-name`
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# eval machinery is quite performance sensitive. So we use the internals of the `by-name` overlay
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# to implement our own way to avoid an evaluation failure for this script.
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#
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# See <https://github.com/NixOS/nixpkgs/issues/338227> for more motivation for this code block.
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overlay = self: super: {
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_internalCallByNamePackageFile =
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file: if builtins.pathExists file then super._internalCallByNamePackageFile file else null;
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};
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nixpkgsArgs = removeAttrs args [ "maintainer" "overlays" ] // {
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overlays = args.overlays or [] ++ [ overlay ];
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};
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pkgs = import ./../../default.nix nixpkgsArgs;
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maintainer_ = pkgs.lib.maintainers.${maintainer};
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packagesWith = cond: return: set:
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(pkgs.lib.flatten
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(pkgs.lib.mapAttrsToList
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(name: pkg:
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let
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result = builtins.tryEval
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(
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if pkgs.lib.isDerivation pkg && cond name pkg then
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# Skip packages whose closure fails on evaluation.
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# This happens for pkgs like `python27Packages.djangoql`
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# that have disabled Python pkgs as dependencies.
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builtins.seq pkg.outPath
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[ (return name pkg) ]
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else if pkg.recurseForDerivations or false || pkg.recurseForRelease or false
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then packagesWith cond return pkg
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else [ ]
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);
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in
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if result.success then result.value
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else [ ]
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)
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set
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)
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);
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in
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packagesWith
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(name: pkg:
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(
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if builtins.hasAttr "meta" pkg && builtins.hasAttr "maintainers" pkg.meta
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then (
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if builtins.isList pkg.meta.maintainers
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then builtins.elem maintainer_ pkg.meta.maintainers
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else maintainer_ == pkg.meta.maintainers
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)
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else false
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)
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)
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(name: pkg: pkg)
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pkgs
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