Add support for passing options to the Clippy command

README.md

@@ -238,6 +238,7 @@ process, rest is passed-through into `mkDerivation`.
 | `remapPathPrefix` | When `true`, rustc remaps the (`/nix/store`) source paths to `/sources` to reduce the number of dependencies in the closure. Default: `true` |
 | `cargoTestCommands` | The commands to run in the `checkPhase`. Do not forget to set [`doCheck`](https://nixos.org/nixpkgs/manual/#ssec-check-phase). The argument must be a function modifying the default value. <br/> Default: `[ ''cargo $cargo_options test $cargo_test_options'' ]` |
 | `cargoTestOptions` | Options passed to cargo test, i.e. `cargo test <OPTS>`. These options can be accessed during the build through the environment variable `cargo_test_options`. <br/> Note: these values are not (shell) escaped, meaning that you can use environment variables but must be careful when introducing e.g. spaces. <br/> The argument must be a function modifying the default value. <br/> Default: `[ "$cargo_release" ''-j "$NIX_BUILD_CORES"'' ]` |
+| `cargoClippyOptions` | Options passed to cargo clippy, i.e. `cargo clippy -- <OPTS>`. These options can be accessed during the build through the environment variable `cargo_clippy_options`. <br /> Note: these values are not (shell) escaped, meaning that you can use environment variables but must be careful when introducing e.g. spaces. <br/> The argument must be a function modifying the default value. <br/> Default: `[ "-D warnings" ]` |
 | `nativeBuildInputs` | Extra `nativeBuildInputs` to all derivations. Default: `[]` |
 | `buildInputs` | Extra `buildInputs` to all derivations. Default: `[]` |
 | `cargoOptions` | Options passed to all cargo commands, i.e. `cargo <OPTS> ...`. These options can be accessed during the build through the environment variable `cargo_options`. <br/> Note: these values are not (shell) escaped, meaning that you can use environment variables but must be careful when introducing e.g. spaces. <br/> The argument must be a function modifying the default value. <br/> Default: `[ ]` |

build.nix

@@ -38,6 +38,7 @@
   #  Which drops the run-time dependency on the crates-io source thereby
   #  significantly reducing the Nix closure size.
 , removeReferencesToSrcFromDocs
+, cargoClippyOptions
 , mode ? "build" # `build`, `check`, `test` or `clippy`
 , gitDependencies
 , pname
@@ -140,6 +141,7 @@ let
     cargo_options = cargoOptions;
     cargo_build_options = cargoBuildOptions;
     cargo_test_options = cargoTestOptions;
+    cargo_clippy_options = cargoClippyOptions;
     cargo_doc_options = cargoDocOptions;
     cargo_bins_jq_filter = copyBinsFilter;
     cargo_libs_jq_filter = copyLibsFilter;

config.nix

@@ -74,6 +74,14 @@ let
     cargoTestOptions =
       allowFun attrs0 "cargoTestOptions" [ "$cargo_release" ''-j "$NIX_BUILD_CORES"'' ];
 
+    # Options passed to cargo clippy, i.e. `cargo clippy -- <OPTS>`. These options
+    # can be accessed during the build through the environment variable
+    # `cargo_clippy_options`. <br />
+    # Note: these values are not (shell) escaped, meaning that you can use
+    # environment variables but must be careful when introducing e.g. spaces. <br/>
+    cargoClippyOptions =
+      allowFun attrs0 "cargoClippyOptions" [ "-D warnings" ];
+
     # Extra `nativeBuildInputs` to all derivations.
     nativeBuildInputs = attrs0.nativeBuildInputs or [];
 
@@ -248,7 +256,7 @@ let
       else if (mode == "test") then
         ''cargo $cargo_options test $cargo_test_options >> $cargo_build_output_json''
       else if (mode == "clippy") then
-        ''cargo $cargo_options clippy $cargo_build_options -- -D warnings >> $cargo_build_output_json''
+        ''cargo $cargo_options clippy $cargo_build_options -- $cargo_clippy_options >> $cargo_build_output_json''
       else throw "Unknown mode ${mode}, allowed modes: build, check, test, clippy";
 
   # config used during build the prebuild and the final build
@@ -275,6 +283,8 @@ let
       cargoTestCommands
       cargoTestOptions
 
+      cargoClippyOptions
+
       doDoc
       doDocFail
       cargoDocCommands