Move ext/* to scripts/

scripts/setup-rust.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+source VARS
+
+#
+echo "Setting up Rust"
+
+case "$OSTYPE" in
+    darwin*)
+        brew install rust
+        ;;
+    linux*)
+        if is-arch; then
+            sudo pacman --noconfirm -S rust cargo
+        elif is-deb; then
+            echo ...
+            exit 1
+        fi
+esac
+
+git-repo "https://github.com/rust-lang/rust.git" "rust"
+git-repo "https://github.com/phildawes/racer.git" "racer-src"
+
+cd racer-src && cargo build --release
+mv racer-src/target/release/racer ./racer