Add system.replaceRuntimeDependencies to quickly replace system dependencies
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@ -95,7 +95,7 @@ let
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# kernel, systemd units, init scripts, etc.) as well as a script
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# `switch-to-configuration' that activates the configuration and
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# makes it bootable.
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system = showWarnings (
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baseSystem = showWarnings (
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if [] == failed then pkgs.stdenv.mkDerivation {
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name = "nixos-${config.system.nixosVersion}";
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preferLocalBuild = true;
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@ -118,6 +118,10 @@ let
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perl = "${pkgs.perl}/bin/perl -I${pkgs.perlPackages.FileSlurp}/lib/perl5/site_perl";
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} else throw "\nFailed assertions:\n${concatStringsSep "\n" (map (x: "- ${x}") failed)}");
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# Replace runtime dependencies
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system = fold ({ oldDependency, newDependency }: drv:
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pkgs.replaceDependency { inherit oldDependency newDependency drv; }
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) baseSystem config.system.replaceRuntimeDependencies;
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in
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@ -184,6 +188,33 @@ in
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'';
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};
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system.replaceRuntimeDependencies = mkOption {
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default = [];
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example = lib.literalExample "[ ({ original = pkgs.openssl; replacement = pkgs.callPackage /path/to/openssl { ... }; }) ]";
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type = types.listOf (types.submodule (
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{ options, ... }: {
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options.original = mkOption {
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type = types.package;
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description = "The original package to override.";
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};
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options.replacement = mkOption {
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type = types.package;
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description = "The replacement package.";
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};
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})
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);
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apply = map ({ original, replacement, ... }: {
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oldDependency = original;
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newDependency = replacement;
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});
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description = ''
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List of packages to override without doing a full rebuild.
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The original derivation and replacement derivation must have the same
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name length, and ideally should have close-to-identical directory layout.
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'';
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};
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};
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