osx: fix dependency installation failure when deps are already installed

installer-osx.sh.in

@@ -20,6 +20,7 @@
 set -e
 
 zrythm_ver="@VERSION@"
+carla_ver="@CARLA_VERSION@"
 zplugins_ver="@ZPLUGINS_VERSION@"
 
 show_error () {
@@ -64,15 +65,22 @@ if [ $proceed -ne 0 ]; then
 
   # link
   echo "Linking..."
-  brew link carla-git
-  brew link --overwrite zrythm@TRIAL@
+  brew switch carla-git $carla_ver || true
+  brew switch zrythm@TRIAL@ $zrythm_ver || true
+  brew unlink carla-git && \
+    brew link --overwrite carla-git && \
+    brew switch carla-git $carla_ver
+  brew unlink zrythm@TRIAL@ && \
+    brew link --overwrite zrythm@TRIAL@ && \
+    brew switch zrythm@TRIAL@ $zrythm_ver
 
   # install deps
   echo "Installing deps..."
   zrythm_deps="$(brew info zrythm@TRIAL@ | grep Required | sed -e "s/Required: //" | sed -e "s/, / /g" | sed -e "s/carla-git//")"
   carla_deps="$(brew info carla-git | grep Required | sed -e "s/Required: //" | sed -e "s/, / /g")"
-  brew install $carla_deps
-  brew install $zrythm_deps
+  brew upgrade
+  brew install $carla_deps || true
+  brew install $zrythm_deps || true
 
   # fix paths
   echo "Fixing paths..."

tools/gen_osx_installer_brew.sh

@@ -70,12 +70,15 @@ elif [ "$bottle_or_zip" = "zip" ]; then
   cp installer-osx.sh.in $tmp/installer.sh
   sed -i -e "s/@VERSION@/$zrythm_version/" \
     $tmp/installer.sh
+  sed -i -e "s/@CARLA_VERSION@/0.1.1/" \
+    $tmp/installer.sh
   if [[ "$bottle_filename" == *"rial"* ]]; then
     cp README-osx-trial.in $tmp/README
     sed -i -e "s/@TRIAL@/-trial/g" \
       $tmp/installer.sh
   else
     cp README-osx.in $tmp/README
+    sed -i -e "s/@_AT_@/@/g" $tmp/README
     sed -i -e "s/@TRIAL@//g" $tmp/installer.sh
   fi
   sed -i -e "s/@VERSION@/$zrythm_version/" \