build-rust-crate: nixpkgs-fmt

pkgs/build-support/rust/build-rust-crate/default.nix

@@ -4,8 +4,16 @@
 # This can be useful for deploying packages with NixOps, and to share
 # binary dependencies between projects.
 
-{ lib, stdenv, defaultCrateOverrides, fetchCrate, pkgsBuildBuild, rustc, rust
-, cargo, jq }:
+{ lib
+, stdenv
+, defaultCrateOverrides
+, fetchCrate
+, pkgsBuildBuild
+, rustc
+, rust
+, cargo
+, jq
+}:
 
 let
   # Create rustc arguments to link against the given list of dependencies
@@ -13,18 +21,21 @@ let
   #
   # See docs for crateRenames below.
   mkRustcDepArgs = dependencies: crateRenames:
-      lib.concatMapStringsSep " " (dep:
+    lib.concatMapStringsSep " "
+      (dep:
         let
-          normalizeName = lib.replaceStrings ["-"] ["_"];
+          normalizeName = lib.replaceStrings [ "-" ] [ "_" ];
           extern = normalizeName dep.libName;
           # Find a choice that matches in name and optionally version.
           findMatchOrUseExtern = choices:
-            lib.findFirst (choice:
+            lib.findFirst
+              (choice:
                 (!(choice ? version)
                   || choice.version == dep.version or ""))
               { rename = extern; }
               choices;
-          name = if lib.hasAttr dep.crateName crateRenames then
+          name =
+            if lib.hasAttr dep.crateName crateRenames then
               let choices = crateRenames.${dep.crateName};
               in
               normalizeName (
@@ -34,11 +45,13 @@ let
               )
             else
               extern;
-        in (if lib.any (x: x == "lib" || x == "rlib") dep.crateType then
+        in
+        (if lib.any (x: x == "lib" || x == "rlib") dep.crateType then
           " --extern ${name}=${dep.lib}/lib/lib${extern}-${dep.metadata}.rlib"
         else
           " --extern ${name}=${dep.lib}/lib/lib${extern}-${dep.metadata}${stdenv.hostPlatform.extensions.sharedLibrary}")
-      ) dependencies;
+      )
+      dependencies;
 
   # Create feature arguments for rustc.
   mkRustcFeatureArgs = lib.concatMapStringsSep " " (f: ''--cfg feature=\"${f}\"'');
@@ -60,12 +73,13 @@ let
   rustAttrs = rust;
 in
 
-/* The overridable pkgs.buildRustCrate function.
+  /* The overridable pkgs.buildRustCrate function.
     *
     * Any unrecognized parameters will be passed as to
     * the underlying stdenv.mkDerivation.
   */
- crate_: lib.makeOverridable (
+crate_: lib.makeOverridable
+  (
     # The rust compiler to use.
     #
     # Default: pkgs.rustc
@@ -185,13 +199,28 @@ in
     , postInstall
     }:
 
-let crate = crate_ // (lib.attrByPath [ crate_.crateName ] (attr: {}) crateOverrides crate_);
+    let
+      crate = crate_ // (lib.attrByPath [ crate_.crateName ] (attr: { }) crateOverrides crate_);
       dependencies_ = dependencies;
       buildDependencies_ = buildDependencies;
       processedAttrs = [
-      "src" "nativeBuildInputs" "buildInputs" "crateBin" "crateLib" "libName" "libPath"
-      "buildDependencies" "dependencies" "features" "crateRenames"
-      "crateName" "version" "build" "authors" "colors" "edition"
+        "src"
+        "nativeBuildInputs"
+        "buildInputs"
+        "crateBin"
+        "crateLib"
+        "libName"
+        "libPath"
+        "buildDependencies"
+        "dependencies"
+        "features"
+        "crateRenames"
+        "crateName"
+        "version"
+        "build"
+        "authors"
+        "colors"
+        "edition"
         "buildTests"
       ];
       extraDerivationAttrs = builtins.removeAttrs crate processedAttrs;
@@ -203,10 +232,10 @@ let crate = crate_ // (lib.attrByPath [ crate_.crateName ] (attr: {}) crateOverr
       # crate2nix has a hack for the old bash based build script that did split
       # entries at `,`. No we have to work around that hack.
       # https://github.com/kolloch/crate2nix/blame/5b19c1b14e1b0e5522c3e44e300d0b332dc939e7/crate2nix/templates/build.nix.tera#L89
-    crateBin = lib.filter (bin: !(bin ? name && bin.name == ",")) (crate.crateBin or []);
+      crateBin = lib.filter (bin: !(bin ? name && bin.name == ",")) (crate.crateBin or [ ]);
       hasCrateBin = crate ? crateBin;
-in
-stdenv.mkDerivation (rec {
+    in
+    stdenv.mkDerivation (rec {
 
       inherit (crate) crateName;
       inherit
@@ -228,8 +257,8 @@ stdenv.mkDerivation (rec {
       name = "rust_${crate.crateName}-${crate.version}${lib.optionalString buildTests_ "-test"}";
       version = crate.version;
       depsBuildBuild = [ pkgsBuildBuild.stdenv.cc ];
-    nativeBuildInputs = [ rust stdenv.cc cargo jq ] ++ (crate.nativeBuildInputs or []) ++ nativeBuildInputs_;
-    buildInputs = (crate.buildInputs or []) ++ buildInputs_;
+      nativeBuildInputs = [ rust stdenv.cc cargo jq ] ++ (crate.nativeBuildInputs or [ ]) ++ nativeBuildInputs_;
+      buildInputs = (crate.buildInputs or [ ]) ++ buildInputs_;
       dependencies = map lib.getLib dependencies_;
       buildDependencies = map lib.getLib buildDependencies_;
 
@@ -250,12 +279,14 @@ stdenv.mkDerivation (rec {
 
       # Seed the symbol hashes with something unique every time.
       # https://doc.rust-lang.org/1.0.0/rustc/metadata/loader/index.html#frobbing-symbols
-    metadata = let
+      metadata =
+        let
           depsMetadata = lib.foldl' (str: dep: str + dep.metadata) "" (dependencies ++ buildDependencies);
           hashedMetadata = builtins.hashString "sha256"
             (crateName + "-" + crateVersion + "___" + toString (mkRustcFeatureArgs crateFeatures) +
               "___" + depsMetadata + "___" + rustAttrs.toRustTarget stdenv.hostPlatform);
-      in lib.substring 0 10 hashedMetadata;
+        in
+        lib.substring 0 10 hashedMetadata;
 
       build = crate.build or "";
       # Either set to a concrete sub path to the crate root
@@ -263,14 +294,14 @@ stdenv.mkDerivation (rec {
       workspace_member = crate.workspace_member or ".";
       crateVersion = crate.version;
       crateDescription = crate.description or "";
-    crateAuthors = if crate ? authors && lib.isList crate.authors then crate.authors else [];
+      crateAuthors = if crate ? authors && lib.isList crate.authors then crate.authors else [ ];
       crateHomepage = crate.homepage or "";
       crateType =
-      if lib.attrByPath ["procMacro"] false crate then ["proc-macro"] else
-      if lib.attrByPath ["plugin"] false crate then ["dylib"] else
-        (crate.type or ["lib"]);
+        if lib.attrByPath [ "procMacro" ] false crate then [ "proc-macro" ] else
+        if lib.attrByPath [ "plugin" ] false crate then [ "dylib" ] else
+        (crate.type or [ "lib" ]);
       colors = lib.attrByPath [ "colors" ] "always" crate;
-    extraLinkFlags = lib.concatStringsSep " " (crate.extraLinkFlags or []);
+      extraLinkFlags = lib.concatStringsSep " " (crate.extraLinkFlags or [ ]);
       edition = crate.edition or null;
       extraRustcOpts =
         lib.optionals (crate ? extraRustcOpts) crate.extraRustcOpts
@@ -297,20 +328,22 @@ stdenv.mkDerivation (rec {
       outputs = if buildTests then [ "out" ] else [ "out" "lib" ];
       outputDev = if buildTests then [ "out" ] else [ "lib" ];
 
-} // extraDerivationAttrs
-)) {
+    } // extraDerivationAttrs
+    )
+  )
+{
   rust = rustc;
   release = crate_.release or true;
   verbose = crate_.verbose or true;
-  extraRustcOpts = [];
-  features = [];
-  nativeBuildInputs = [];
-  buildInputs = [];
+  extraRustcOpts = [ ];
+  features = [ ];
+  nativeBuildInputs = [ ];
+  buildInputs = [ ];
   crateOverrides = defaultCrateOverrides;
   preUnpack = crate_.preUnpack or "";
   postUnpack = crate_.postUnpack or "";
   prePatch = crate_.prePatch or "";
-  patches = crate_.patches or [];
+  patches = crate_.patches or [ ];
   postPatch = crate_.postPatch or "";
   preConfigure = crate_.preConfigure or "";
   postConfigure = crate_.postConfigure or "";
@@ -318,8 +351,8 @@ stdenv.mkDerivation (rec {
   postBuild = crate_.postBuild or "";
   preInstall = crate_.preInstall or "";
   postInstall = crate_.postInstall or "";
-  dependencies = crate_.dependencies or [];
-  buildDependencies = crate_.buildDependencies or [];
-  crateRenames = crate_.crateRenames or {};
+  dependencies = crate_.dependencies or [ ];
+  buildDependencies = crate_.buildDependencies or [ ];
+  crateRenames = crate_.crateRenames or { };
   buildTests = crate_.buildTests or false;
 }