85 lines
2.6 KiB
Nix
85 lines
2.6 KiB
Nix
# MIT license, see below
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#
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# These are helper functions for determining buildtime closures.
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# Sources:
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# - https://github.com/NixOS/bundlers/blob/00762a03a3d862a2ca6272a21fdc50bda5d36c42/report/default.nix
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# - https://nmattia.com/posts/2019-10-08-runtime-dependencies.html
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{ pkgs, ... }:
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let
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inherit (builtins) genericClosure hasAttr map;
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inherit (pkgs.lib)
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concatLists
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concatMap
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filter
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isDerivation
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isList
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mapAttrsToList
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;
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# Map a drv or list of drvs to a list of output drvs
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drvOutputs =
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drv:
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if isList drv then
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concatMap drvOutputs drv
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else if hasAttr "outputs" drv then
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map (out: drv.${out}) drv.outputs
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else
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[ drv ];
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# Map a drv or list of drvs to the outputs of referenced derivations
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drvDeps =
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drv:
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if isList drv then
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concatMap drvDeps drv
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else
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mapAttrsToList (
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k: v:
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if isDerivation v then
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(drvOutputs v)
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else if isList v then
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concatMap drvOutputs (filter isDerivation v)
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else
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[ ]
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) drv;
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in
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{
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# Get the reference closure of a derivation or list of derivations
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# This may miss dependencies that are only in-closure from string context
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drvClosure =
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let
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wrap = drv: {
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key = drv.outPath;
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inherit drv;
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};
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in
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drv:
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map (obj: obj.drv) (genericClosure {
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startSet = map wrap (drvOutputs drv);
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operator = obj: map wrap (concatLists (drvDeps obj.drv.drvAttrs));
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});
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}
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# MIT License
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#
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# Copyright (c) 2021 Nicolas Mattia, Tim Van Baak
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in all
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# copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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# SOFTWARE.
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#
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