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https://github.com/ilyakooo0/haskell.nix.git
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* Include dependencies of haskell.nix that were tracked in `nix/sources.json` as flake inputs (`flake.lock` replaces `nix/sources.json`). * Use `flake-compat` to continue to provide a compatible interface for non flake projects. Co-authored-by: Alexander Bantyev <balsoft@balsoft.ru> Co-authored-by: Shea Levy <shea@shealevy.com>
46 lines
2.2 KiB
Nix
46 lines
2.2 KiB
Nix
{
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# Generic nixpkgs, use *only* for lib functions that are stable across versions
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pkgs ? (import ./. {}).pkgs,
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lib ? pkgs.lib
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}: rec {
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inherit (import ./dimension.nix) dimension;
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# A filter for removing packages that aren't supported on the current platform
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# according to 'meta.platforms'.
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platformFilterGeneric = pkgs: system:
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# This needs to use the correct nixpkgs version so all the systems line up
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let lib = pkgs.lib;
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platform = lib.systems.elaborate { inherit system; };
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# Can't just default to [] for platforms, since no meta.platforms
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# means "all platforms" not "no platforms"
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in drv : if drv ? meta && drv.meta ? platforms then
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lib.any (lib.meta.platformMatch platform) drv.meta.platforms
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else true;
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# Hydra doesn't like these attributes hanging around in "jobsets": it thinks they're jobs!
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stripAttrsForHydra = filterAttrsOnlyRecursive (n: _: n != "recurseForDerivations" && n != "dimension");
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# Keep derivations and attrsets with 'recurseForDerivations'. This ensures that we match the
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# derivations that Hercules will see, and prevents Hydra from trying to pick up all sorts of bad stuff
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# (like attrsets that contain themselves!).
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filterDerivations = filterAttrsOnlyRecursive (n: attrs: lib.isDerivation attrs || attrs.recurseForDerivations or false);
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# A version of 'filterAttrsRecursive' that doesn't recurse into derivations. This prevents us from going into an infinite
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# loop with the 'out' attribute on derivations.
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# TODO: Surely this shouldn't be necessary. I think normal 'filterAttrsRecursive' will effectively cause infinite loops
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# if you keep derivations and your predicate forces the value of the attribute, as this then triggers a loop on the
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# 'out' attribute. Weird.
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# To make this function faster, unwanted attributes are mapped to {} instead of being
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# removed. This keeps the function lazy and avoids unwanted evaluation of sibling
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# derivations.
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filterAttrsOnlyRecursive = pred: set:
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lib.mapAttrs (name: v:
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if pred name v
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then
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if builtins.isAttrs v
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&& !lib.isDerivation v
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then filterAttrsOnlyRecursive pred v
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else v
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else {}) set;
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}
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