Add ability to get package information

cook.sh

@@ -44,6 +44,17 @@ function op {
         unfetch)
             rm -rfv build
             ;;
+        info)
+            pushd build > /dev/null
+            if [ -e Cargo.toml ]
+            then
+                package_version="$(cargo config package.version | tr -d '"')"
+            else
+                package_version="$(git rev-parse --short HEAD)"
+            fi
+            echo "$1_${package_version}"
+            popd > /dev/null
+            ;;
         update)
             pushd build > /dev/null
             skip="0"

setup.sh

@@ -10,6 +10,11 @@ echo "Update rust nightly"
 rustup update nightly
 echo "Downloading rust source"
 rustup component add rust-src
+if [ -z "$(which cargo-config)" ]
+then
+    echo "Installing cargo-config"
+    cargo install -f cargo-config
+fi
 if [ -z "$(which xargo)" ]
 then
     echo "Installing xargo"