Get the git version properly

build.sh

@@ -37,7 +37,7 @@ function package_user_version() {
 	./pharo PharoLauncher.image eval --save "PhLDeploymentScript doAll"
 
 	# Set the launcher version on Pharo 
-	LAUNCHER_VERSION=git describe --tags
+	LAUNCHER_VERSION=$(eval 'git describe --tags')
 	./pharo PharoLauncher.image eval --save "PhLAboutCommand version: '$LAUNCHER_VERSION'"  
 
 	# Faster the startup of the launcher image