124 lines
4.1 KiB
Nix
124 lines
4.1 KiB
Nix
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{
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version,
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lib,
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writeText,
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}:
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{
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inherit version;
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mkBsdArch =
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stdenv':
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{
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x86_64 = "amd64";
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aarch64 = "aarch64";
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i486 = "i386";
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i586 = "i386";
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i686 = "i386";
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armv6l = "armv6";
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armv7l = "armv7";
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powerpc = "powerpc";
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powerpc64 = "powerpc64";
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powerpc64le = "powerpc64le";
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riscv64 = "riscv64";
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}
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.${stdenv'.hostPlatform.parsed.cpu.name} or stdenv'.hostPlatform.parsed.cpu.name;
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mkBsdCpuArch =
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stdenv':
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{
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x86_64 = "amd64";
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aarch64 = "aarch64";
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i486 = "i386";
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i586 = "i386";
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i686 = "i386";
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armv6l = "arm";
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armv7l = "arm";
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powerpc = "powerpc";
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powerpc64 = "powerpc";
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powerpc64le = "powerpc";
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riscv64 = "riscv";
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}
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.${stdenv'.hostPlatform.parsed.cpu.name} or stdenv'.hostPlatform.parsed.cpu.name;
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mkBsdMachine =
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stdenv':
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{
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x86_64 = "amd64";
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aarch64 = "arm64";
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i486 = "i386";
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i586 = "i386";
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i686 = "i386";
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armv6l = "arm";
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armv7l = "arm";
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powerpc = "powerpc";
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powerpc64 = "powerpc";
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powerpc64le = "powerpc";
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riscv64 = "riscv";
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}
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.${stdenv'.hostPlatform.parsed.cpu.name} or stdenv'.hostPlatform.parsed.cpu.name;
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install-wrapper = builtins.readFile ../../lib/install-wrapper.sh;
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# this function takes a list of patches and a list of paths and returns a list of derivations,
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# one per file that is patched, containing the actual patch contents. This allows us to have
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# extract only the patches that are relevant for a given subset of the source tree.
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# note: the "list of patches" input can be a directory containing patch files, a path or a list of valid inputs to this argument, recursively.
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filterPatches =
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patches: paths:
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let
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isDir =
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file:
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let
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base = baseNameOf file;
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type = (builtins.readDir (dirOf file)).${base} or null;
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in
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file == /. || type == "directory";
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consolidatePatches =
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patches:
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if (lib.isDerivation patches) then
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[ patches ]
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else if (builtins.isPath patches) then
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(if (isDir patches) then (lib.filesystem.listFilesRecursive patches) else [ patches ])
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else if (builtins.isList patches) then
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(lib.flatten (builtins.map consolidatePatches patches))
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else
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throw "Bad patches - must be path or derivation or list thereof";
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consolidated = consolidatePatches patches;
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splitPatch =
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patchFile:
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let
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allLines' = lib.strings.splitString "\n" (builtins.readFile patchFile);
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allLines = builtins.filter (
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line: !((lib.strings.hasPrefix "diff --git" line) || (lib.strings.hasPrefix "index " line))
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) allLines';
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foldFunc =
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a: b:
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if ((lib.strings.hasPrefix "--- " b) || (lib.strings.hasPrefix "diff --git " b)) then
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(a ++ [ [ b ] ])
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else
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((lib.lists.init a) ++ (lib.lists.singleton ((lib.lists.last a) ++ [ b ])));
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partitionedPatches' = lib.lists.foldl foldFunc [ [ ] ] allLines;
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partitionedPatches =
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if (builtins.length partitionedPatches' > 1) then
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(lib.lists.drop 1 partitionedPatches')
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else
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(throw "${patchFile} does not seem to be a unified patch (diff -u). this is required for FreeBSD.");
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filterFunc =
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patchLines:
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let
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prefixedPath = builtins.elemAt (builtins.split " |\t" (builtins.elemAt patchLines 1)) 2;
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unfixedPath = lib.path.subpath.join (lib.lists.drop 1 (lib.path.subpath.components prefixedPath));
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in
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lib.lists.any (included: lib.path.hasPrefix (/. + ("/" + included)) (/. + ("/" + unfixedPath))) (
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paths
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);
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filteredLines = builtins.filter filterFunc partitionedPatches;
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derive = patchLines: writeText "freebsd-patch" (lib.concatLines patchLines);
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derivedPatches = builtins.map derive filteredLines;
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in
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derivedPatches;
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in
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lib.lists.concatMap splitPatch consolidated;
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}
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