Clean up a bit and remove patches

Signed-off-by: Marcel Müller <neikos@neikos.email>

lib/cargo-dylint.nix

@@ -40,20 +40,6 @@ craneLib.buildPackage (
   // {
     inherit cargoArtifacts;
 
-    patches = [ ./cargo-dylint-patch-rustup.patch ];
-
-    postPatch = ''
-      substituteInPlace dylint/build.rs \
-        --replace-fail @DRIVER_DIR@ ${src}/driver
-
-      substituteInPlace internal/src/cargo.rs \
-        --replace-fail @STABLE_CARGO@ ${craneLib.cargo}/bin/cargo
-
-      substituteInPlace internal/src/rustup.rs \
-        --replace-fail @RUST_TOOLCHAIN@ $RUSTUP_TOOLCHAIN \
-        --replace-fail @RUST_TOOLCHAIN_PATH@ ${craneLib.rustc}
-    '';
-
     doNotRemoveReferencesToRustToolchain = true;
   }
 )

lib/mk-cargo-dylint-driver.nix

@@ -3,21 +3,12 @@
   craneLib,
 }:
 
-toolchainName:
+toolchainName: toolchain:
 
 let
   pname = "cargo-dylint-driver-${toolchainName}";
   version = "4.0.0";
   src = ../dylint_driver;
-  toolchain =
-    (pkgs.rust-bin.fromRustupToolchainFile (
-      pkgs.writeText "${toolchainName}-toolchain.toml" toolchainName
-    )).override
-      {
-        extensions = [
-          "rustc-dev"
-        ];
-      };
 
 in
 

lib/mk-dylint.nix

@@ -12,12 +12,22 @@
 let
   inherit (pkgs) lib;
   driver_names = lib.groupBy (v: v.toolchain) lints;
+  toolchains = builtins.mapAttrs (
+    name: _:
+
+    (pkgs.rust-bin.fromRustupToolchainFile (pkgs.writeText "${name}-toolchain.toml" name)).override {
+      extensions = [
+        "rustc-dev"
+      ];
+    }
+  ) driver_names;
   driverMap = builtins.mapAttrs (
     name: _:
     lib.throwIf ((builtins.match "^[[:digit:]].*$" name) != null)
       "Rust toolchains generally do not start with numbers. Make sure you include the channel, as in `nightly-YYYY-MM-DD`. Given '${name}'"
       mkCargoDylintDriver
       "${name}"
+      toolchains.${name}
   ) driver_names;
   drivers = pkgs.runCommandLocal "dylint-drivers" { } ''
     mkdir -p $out
@@ -29,24 +39,11 @@ let
   '';
   cargo-wrapper = pkgs.writeShellScriptBin "cargo" ''
     case "$RUSTUP_TOOLCHAIN" in
-    ${lib.strings.concatMapAttrsStringSep "\n" (
+    ${lib.strings.concatMapAttrsStringSep "\n" (name: _: ''
-      name: driver:
-      let
-        toolchain =
-          (pkgs.rust-bin.fromRustupToolchainFile (pkgs.writeText "${name}-toolchain.toml" name)).override
-            {
-              extensions = [
-                "rustc-dev"
-              ];
-            };
-
-      in
-      ''
       ${name})
-          exec ${toolchain}/bin/cargo "$@"
+        exec ${toolchains.${name}}/bin/cargo "$@"
       ;;
-      ''
+    '') driverMap}
-    ) driverMap}
       *)
         exec ${craneLib.cargo}/bin/cargo "$@"
       ;;