diff --git a/ext/Makefile b/ext/Makefile
new file mode 100644
index 000000000..cf5400f42
--- /dev/null
+++ b/ext/Makefile
@@ -0,0 +1,18 @@
+
+all: rust csharp
+
+rust:
+	echo "Installing Rust dependencies"
+	git clone --depth 1 --recursive https://github.com/rust-lang/rust.git rust
+	git clone --depth 1 --recursive https://github.com/phildawes/racer.git racer-src
+	cd racer-src && cargo build --release
+	mv racer-src/target/release/racer ./racer
+	rm -rf racer-src
+
+csharp:
+	echo "Installing C# dependencies"
+	git clone --depth 1 --recursive https://github.com/OmniSharp/omnisharp-server omnisharp
+	cd omnisharp && xbuild
+	mv omnisharp/bin/Debug/OmniSharp.exe ./OmniSharp.exe
+	rm -rf omnisharp
+
diff --git a/modules/module-csharp.el b/modules/module-csharp.el
index 7e38311cb..06dec5156 100644
--- a/modules/module-csharp.el
+++ b/modules/module-csharp.el
@@ -9,12 +9,12 @@
 ;; unity shaders
 (use-package shader-mode :mode "\\.shader$")
 
+(setq omnisharp-auto-complete-want-documentation nil
+      omnisharp-server-executable-path (concat narf-ext-dir "/OmniSharp.exe"))
+
 (use-package omnisharp
   :defer t
-  :preface
-  (setq omnisharp-server-executable-path "~/Dropbox/lib/omnisharp-server/OmniSharp/bin/Debug/OmniSharp.exe"
-        omnisharp-auto-complete-want-documentation nil)
-  :if (file-exists-p omnisharp-server-executable-path)
+  :when (file-exists-p omnisharp-server-executable-path)
   :init
   (add-hook! csharp-mode '(emr-initialize omnisharp-mode))
   :config
diff --git a/modules/module-rust.el b/modules/module-rust.el
index e72dbb10c..202691d52 100644
--- a/modules/module-rust.el
+++ b/modules/module-rust.el
@@ -10,10 +10,10 @@
     :config (add-hook! rust-mode 'flycheck-mode))
 
   (use-package racer
-    :when (file-exists-p "/usr/local/bin/racer")
+    :when (file-exists-p (concat narf-ext-dir "/racer"))
     :config
-    (setq racer-cmd "/usr/local/bin/racer"
-          racer-rust-src-path "~/Dropbox/lib/rust/src/")
+    (setq racer-cmd (concat narf-ext-dir "/racer")
+          racer-rust-src-path (concat narf-ext-dir "/rust/src/"))
     (map! :map rust-mode-map :m "gd" 'racer-find-definition)
 
     ;; TODO Unit test keybinds