diff --git a/pkgs/by-name/pa/patchcil/deps.json b/pkgs/by-name/pa/patchcil/deps.json
new file mode 100644
index 000000000000..175fd1c3cb4d
--- /dev/null
+++ b/pkgs/by-name/pa/patchcil/deps.json
@@ -0,0 +1,32 @@
+[
+  {
+    "pname": "AsmResolver",
+    "version": "6.0.0-beta.1",
+    "hash": "sha256-ZW61z6Qmztdy2NaiqxvNcP5RWBIiIO6CWNnqYq0MwoA="
+  },
+  {
+    "pname": "AsmResolver.DotNet",
+    "version": "6.0.0-beta.1",
+    "hash": "sha256-VoTiIr2/r2my6sg2AOEeiqz9vZhWtq5mGaW2Hx90Uo4="
+  },
+  {
+    "pname": "AsmResolver.PE",
+    "version": "6.0.0-beta.1",
+    "hash": "sha256-tTU/flTxRJaC4gkmI/gctqIriGIMntkgTs51TqzcQlg="
+  },
+  {
+    "pname": "AsmResolver.PE.File",
+    "version": "6.0.0-beta.1",
+    "hash": "sha256-hPuFrpcm2VMiYEirsL4kYmAhOzjwjNXUklIfYJEonLo="
+  },
+  {
+    "pname": "DotNet.Glob",
+    "version": "3.1.3",
+    "hash": "sha256-5uGSaGY1IqDjq4RCDLPJm0Lg9oyWmyR96OiNeGqSj84="
+  },
+  {
+    "pname": "System.CommandLine",
+    "version": "2.0.0-beta4.22272.1",
+    "hash": "sha256-zSO+CYnMH8deBHDI9DHhCPj79Ce3GOzHCyH1/TiHxcc="
+  }
+]
diff --git a/pkgs/by-name/pa/patchcil/package.nix b/pkgs/by-name/pa/patchcil/package.nix
new file mode 100644
index 000000000000..d0bdfb97c7b2
--- /dev/null
+++ b/pkgs/by-name/pa/patchcil/package.nix
@@ -0,0 +1,76 @@
+{
+  lib,
+  fetchFromGitHub,
+  buildDotnetModule,
+  dotnetCorePackages,
+  stdenv,
+  nix-update-script,
+  aot ? dotnetCorePackages.sdk_9_0.hasILCompiler && !stdenv.hostPlatform.isDarwin,
+}:
+
+buildDotnetModule rec {
+  pname = "patchcil";
+  version = "0.2.2";
+
+  src = fetchFromGitHub {
+    owner = "GGG-KILLER";
+    repo = "patchcil";
+    tag = "v${version}";
+    hash = "sha256-jqVXKp5ShWkIMAgmcwu9/QHy+Ey9d1Piv62wsO0Xm44=";
+  };
+
+  nativeBuildInputs = lib.optional aot stdenv.cc;
+
+  projectFile = "src/PatchCil.csproj";
+  nugetDeps = ./deps.json;
+
+  dotnet-sdk = dotnetCorePackages.sdk_9_0;
+  dotnet-runtime = if aot then null else dotnetCorePackages.runtime_9_0;
+
+  selfContainedBuild = aot;
+  dotnetFlags = lib.optionals (!aot) [
+    # Disable AOT
+    "-p:PublishAot=false"
+    "-p:InvariantGlobalization=false"
+    "-p:EventSourceSupport=true"
+    "-p:HttpActivityPropagationSupport=true"
+    "-p:MetadataUpdaterSupport=true"
+    "-p:MetricsSupport=true"
+    "-p:UseNativeHttpHandler=false"
+    "-p:XmlResolverIsNetworkingEnabledByDefault=true"
+    "-p:EnableGeneratedComInterfaceComImportInterop=true"
+    "-p:_ComObjectDescriptorSupport=true"
+    "-p:_DataSetXmlSerializationSupport=true"
+    "-p:_DefaultValueAttributeSupport=true"
+    "-p:_DesignerHostSupport=true"
+    "-p:_EnableConsumingManagedCodeFromNativeHosting=true"
+    "-p:_UseManagedNtlm=true"
+  ];
+
+  preFixup = lib.optionalString aot ''
+    # Remove debug symbols as they shouldn't have anything in them.
+    rm $out/lib/patchcil/patchcil.dbg
+  '';
+
+  executables = [ "patchcil" ];
+
+  passthru = {
+    updateScript = nix-update-script { };
+  };
+
+  meta = {
+    description = "A small utility to modify the library paths from PInvoke in .NET assemblies.";
+    homepage = "https://github.com/GGG-KILLER/patchcil";
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ ggg ];
+    mainProgram = "patchcil";
+    platforms = [
+      "x86_64-linux"
+      "aarch64-linux"
+      "x86_64-darwin"
+      "aarch64-darwin"
+      "x86_64-windows"
+      "i686-windows"
+    ];
+  };
+}