swiftPackages.swift-driver: fix patches that no longer apply cleanly

pkgs/development/compilers/swift/swift-driver/default.nix

@@ -57,16 +57,7 @@ stdenv.mkDerivation {
     })
   ];
 
-  configurePhase = generated.configure + ''
-    swiftpmMakeMutable swift-tools-support-core
-    patch -p1 -d .build/checkouts/swift-tools-support-core -i ${
-      fetchpatch {
-        url = "https://github.com/apple/swift-tools-support-core/commit/990afca47e75cce136d2f59e464577e68a164035.patch";
-        hash = "sha256-PLzWsp+syiUBHhEFS8+WyUcSae5p0Lhk7SSRdNvfouE=";
-        includes = [ "Sources/TSCBasic/FileSystem.swift" ];
-      }
-    }
-  '';
+  configurePhase = generated.configure;
 
   # TODO: Tests depend on indexstore-db being provided by an existing Swift
   # toolchain. (ie. looks for `../lib/libIndexStore.so` relative to swiftc.

pkgs/development/compilers/swift/swift-driver/patches/linux-fix-linking.patch

@@ -10,10 +10,10 @@ index a4a735f498..381522cc1f 100644
  import SwiftOptions
  
  import func TSCBasic.lookupExecutablePath
-@@ -120,7 +121,18 @@
-       // just using `clang` and avoid a dependency on the C++ runtime.
-       let clangTool: Tool =
-         parsedOptions.hasArgument(.enableExperimentalCxxInterop) ? .clangxx : .clang
+@@ -130,7 +131,18 @@
+       }
+ 
+       let clangTool: Tool = cxxCompatEnabled ? .clangxx : .clang
 -      var clangPath = try getToolPath(clangTool)
 +
 +      // For Nix, prefer linking using the wrapped Nixpkgs clang, instead of using
@@ -21,7 +21,7 @@ index a4a735f498..381522cc1f 100644
 +      // we still want to use it for other purposes (clang importer).
 +      var clangPath: AbsolutePath
 +      if let binPath = try? AbsolutePath(validating: "@clang@/bin"),
-+         let tool = lookupExecutablePath(filename: parsedOptions.hasArgument(.enableExperimentalCxxInterop)
++         let tool = lookupExecutablePath(filename: cxxCompatEnabled
 +                                                        ? "clang++" : "clang",
 +                                         searchPaths: [binPath]) {
 +        clangPath = tool
@@ -30,7 +30,7 @@ index a4a735f498..381522cc1f 100644
        if let toolsDirPath = parsedOptions.getLastArgument(.toolsDirectory) {
          // FIXME: What if this isn't an absolute path?
          let toolsDir = try AbsolutePath(validating: toolsDirPath.asSingle)
-@@ -136,6 +148,7 @@
+@@ -146,6 +158,7 @@
          commandLine.appendFlag("-B")
          commandLine.appendPath(toolsDir)
        }