buildRustCrate: extracted builder scripts into dedicated files
The build expression got quiet large over time and to make it a bit easier to grasp the different scripts involved in the build are now separated from the nix file.
This commit is contained in:
Andreas Rammhold
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# Code for buildRustCrate, a Nix function that builds Rust code, just
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# like Cargo, but using Nix instead.
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#
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# This can be useful for deploying packages with NixOps, and to share
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# binary dependencies between projects.
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{ lib, stdenv, defaultCrateOverrides, fetchCrate, ncurses, rustc }:
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let
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# This doesn't appear to be officially documented anywhere yet.
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# See https://github.com/rust-lang-nursery/rust-forge/issues/101.
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target_os = if stdenv.hostPlatform.isDarwin
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then "macos"
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else stdenv.hostPlatform.parsed.kernel.name;
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makeDeps = dependencies:
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(lib.concatMapStringsSep " " (dep:
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let extern = lib.strings.replaceStrings ["-"] ["_"] dep.libName; in
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(if dep.crateType == "lib" then
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" --extern ${extern}=${dep.out}/lib/lib${extern}-${dep.metadata}.rlib"
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else
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" --extern ${extern}=${dep.out}/lib/lib${extern}-${dep.metadata}${stdenv.hostPlatform.extensions.sharedLibrary}")
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) dependencies);
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echo_build_heading = colors: ''
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echo_build_heading() {
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start=""
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end=""
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if [[ "${colors}" == "always" ]]; then
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start="$(printf '\033[0;1;32m')" #set bold, and set green.
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end="$(printf '\033[0m')" #returns to "normal"
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fi
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if (( $# == 1 )); then
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echo "$start""Building $1""$end"
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else
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echo "$start""Building $1 ($2)""$end"
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fi
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}
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'';
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noisily = colors: verbose: ''
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noisily() {
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start=""
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end=""
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if [[ "${colors}" == "always" ]]; then
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start="$(printf '\033[0;1;32m')" #set bold, and set green.
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end="$(printf '\033[0m')" #returns to "normal"
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fi
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${lib.optionalString verbose ''
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echo -n "$start"Running "$end"
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echo $@
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''}
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$@
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}
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'';
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configureCrate = import ./configure-crate.nix { inherit lib stdenv echo_build_heading noisily makeDeps; };
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buildCrate = import ./build-crate.nix { inherit lib stdenv echo_build_heading noisily makeDeps; };
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installCrate = import ./install-crate.nix;
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in
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crate_: lib.makeOverridable ({ rust, release, verbose, features, buildInputs, crateOverrides,
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dependencies, buildDependencies,
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extraRustcOpts,
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preUnpack, postUnpack, prePatch, patches, postPatch,
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preConfigure, postConfigure, preBuild, postBuild, preInstall, postInstall }:
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let crate = crate_ // (lib.attrByPath [ crate_.crateName ] (attr: {}) crateOverrides crate_);
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dependencies_ = dependencies;
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buildDependencies_ = buildDependencies;
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processedAttrs = [
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"src" "buildInputs" "crateBin" "crateLib" "libName" "libPath"
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"buildDependencies" "dependencies" "features"
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"crateName" "version" "build" "authors" "colors"
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];
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extraDerivationAttrs = lib.filterAttrs (n: v: ! lib.elem n processedAttrs) crate;
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buildInputs_ = buildInputs;
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in
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stdenv.mkDerivation (rec {
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inherit (crate) crateName;
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inherit preUnpack postUnpack prePatch patches postPatch preConfigure postConfigure preBuild postBuild preInstall postInstall;
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src = if lib.hasAttr "src" crate then
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crate.src
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else
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fetchCrate { inherit (crate) crateName version sha256; };
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name = "rust_${crate.crateName}-${crate.version}";
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buildInputs = [ rust ncurses ] ++ (crate.buildInputs or []) ++ buildInputs_;
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dependencies =
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builtins.map
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(dep: dep.override { rust = rust; release = release; verbose = verbose; crateOverrides = crateOverrides; })
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dependencies_;
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buildDependencies =
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builtins.map
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(dep: dep.override { rust = rust; release = release; verbose = verbose; crateOverrides = crateOverrides; })
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buildDependencies_;
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completeDeps = lib.lists.unique (dependencies ++ lib.lists.concatMap (dep: dep.completeDeps) dependencies);
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completeBuildDeps = lib.lists.unique (
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buildDependencies
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++ lib.lists.concatMap (dep: dep.completeBuildDeps ++ dep.completeDeps) buildDependencies
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);
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crateFeatures = if crate ? features then
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lib.concatMapStringsSep " " (f: "--cfg feature=\\\"${f}\\\"") (crate.features ++ features) #"
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else "";
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libName = if crate ? libName then crate.libName else crate.crateName;
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libPath = if crate ? libPath then crate.libPath else "";
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depsMetadata = builtins.foldl' (str: dep: str + dep.metadata) "" (dependencies ++ buildDependencies);
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metadata = builtins.substring 0 10 (builtins.hashString "sha256" (crateName + "-" + crateVersion + "___" + toString crateFeatures + "___" + depsMetadata ));
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crateBin = if crate ? crateBin then
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builtins.foldl' (bins: bin: let
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_name = (if bin ? name then bin.name else crateName);
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name = lib.strings.replaceStrings ["-"] ["_"] _name;
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path = if bin ? path then bin.path else "";
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in
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bins + (if bin == "" then "" else ",") + "${name} ${path}"
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) "" crate.crateBin
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else "";
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finalBins = if crate ? crateBin then
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builtins.foldl' (bins: bin:
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let name = lib.strings.replaceStrings ["-"] ["_"]
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(if bin ? name then bin.name else crateName);
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new_name = if bin ? name then bin.name else crateName;
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in
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if name == new_name then bins else
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(bins + "mv target/bin/${name} target/bin/${new_name};")
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) "" crate.crateBin
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else "";
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build = crate.build or "";
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workspace_member = crate.workspace_member or ".";
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crateVersion = crate.version;
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crateAuthors = if crate ? authors && lib.isList crate.authors then crate.authors else [];
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crateType =
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if lib.attrByPath ["procMacro"] false crate then "proc-macro" else
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if lib.attrByPath ["plugin"] false crate then "dylib" else
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(crate.type or "lib");
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colors = lib.attrByPath [ "colors" ] "always" crate;
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extraLinkFlags = builtins.concatStringsSep " " (crate.extraLinkFlags or []);
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configurePhase = configureCrate {
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inherit crateName buildDependencies completeDeps completeBuildDeps
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crateFeatures libName build workspace_member release libPath crateVersion
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extraLinkFlags
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crateAuthors verbose colors target_os;
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};
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extraRustcOpts = if crate ? extraRustcOpts then crate.extraRustcOpts else [];
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buildPhase = buildCrate {
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inherit crateName dependencies
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crateFeatures libName release libPath crateType
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metadata crateBin finalBins verbose colors
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extraRustcOpts;
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};
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installPhase = installCrate crateName metadata;
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} // extraDerivationAttrs
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)) {
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rust = rustc;
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release = crate_.release or true;
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verbose = crate_.verbose or true;
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extraRustcOpts = [];
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features = [];
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buildInputs = [];
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crateOverrides = defaultCrateOverrides;
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preUnpack = crate_.preUnpack or "";
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postUnpack = crate_.postUnpack or "";
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prePatch = crate_.prePatch or "";
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patches = crate_.patches or [];
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postPatch = crate_.postPatch or "";
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preConfigure = crate_.preConfigure or "";
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postConfigure = crate_.postConfigure or "";
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preBuild = crate_.preBuild or "";
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postBuild = crate_.postBuild or "";
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preInstall = crate_.preInstall or "";
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postInstall = crate_.postInstall or "";
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dependencies = crate_.dependencies or [];
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buildDependencies = crate_.buildDependencies or [];
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}
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