Convert to force cargo version, allow override in recipe

cook.sh

@@ -46,13 +46,15 @@ function op {
             ;;
         info)
             pushd build > /dev/null
-            if [ -e Cargo.toml ]
+            skip="0"
+            if [ "$(type -t recipe_info)" = "function" ]
             then
-                package_version="$(cargo config package.version | tr -d '"')"
-            else
-                package_version="$(git rev-parse --short HEAD)"
+                recipe_info || skip="1"
+            fi
+            if [ "$skip" -eq "0" ]
+            then
+                echo "$1_$(cargo config package.version | tr -d '"')"
             fi
-            echo "$1_${package_version}"
             popd > /dev/null
             ;;
         update)

recipes/orbdata/recipe.sh

@@ -1,5 +1,10 @@
 GIT=https://github.com/redox-os/orbdata.git
 
+function recipe_info {
+    echo "orbdata_0.0.1"
+    return 1
+}
+
 function recipe_update {
     echo "skipping update"
     return 1