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 [ "-" ] [ "_" ];
           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}\"'');
@@ -65,7 +78,8 @@ in
     * 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;
@@ -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
@@ -298,7 +329,9 @@ stdenv.mkDerivation (rec {
       outputDev = if buildTests then [ "out" ] else [ "lib" ];
 
     } // extraDerivationAttrs
-)) {
+    )
+  )
+{
   rust = rustc;
   release = crate_.release or true;
   verbose = crate_.verbose or true;