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36 lines
1.6 KiB
36 lines
1.6 KiB
{ pkgs, lib, callPackage, runCommand }:
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# Documentation is in doc/builders/testers.chapter.md
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{
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testEqualDerivation = callPackage ./test-equal-derivation.nix { };
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testVersion =
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{ package,
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command ? "${package.meta.mainProgram or package.pname or package.name} --version",
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version ? package.version,
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}: runCommand "${package.name}-test-version" { nativeBuildInputs = [ package ]; meta.timeout = 60; } ''
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if output=$(${command} 2>&1); then
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grep -Fw "${version}" - <<< "$output"
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touch $out
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else
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echo "$output" >&2 && exit 1
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fi
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'';
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# See doc/builders/testers.chapter.md or
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# https://nixos.org/manual/nixpkgs/unstable/#tester-invalidateFetcherByDrvHash
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invalidateFetcherByDrvHash = f: args:
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let
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drvPath = (f args).drvPath;
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# It's safe to discard the context, because we don't access the path.
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salt = builtins.unsafeDiscardStringContext (lib.substring 0 12 (baseNameOf drvPath));
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# New derivation incorporating the original drv hash in the name
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salted = f (args // { name = "${args.name or "source"}-salted-${salt}"; });
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# Make sure we did change the derivation. If the fetcher ignores `name`,
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# `invalidateFetcherByDrvHash` doesn't work.
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checked =
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if salted.drvPath == drvPath
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then throw "invalidateFetcherByDrvHash: Adding the derivation hash to the fixed-output derivation name had no effect. Make sure the fetcher's name argument ends up in the derivation name. Otherwise, the fetcher will not be re-run when its implementation changes. This is important for testing."
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else salted;
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in checked;
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}
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