Add a comment regarding lock release

README.md

@@ -41,10 +41,10 @@ Replace `bash -c ...` with `sudo bash -c ...` to install system-wide.
 You can also paste this directly into a Dockerfile `RUN` command, no escaping needed.
 
 ```
-wget -qO- https://raw.githubusercontent.com/orbit-online/upkg/v0.10.2/upkg.sh | (\
+wget -qO- https://raw.githubusercontent.com/orbit-online/upkg/v0.11.0/upkg.sh | (\
   set +e; IFS='' read -r -d $'\0' src; set -e;\
-  printf '%s' "$src" | shasum -a 256 -c <(printf '9864c10139a1bf681e641f669191a39697fee7e8ab885ae11f8a1bd617c677ad  -');\
-  bash -c "set - install -g orbit-online/upkg@v0.10.2; $src")
+  printf '%s' "$src" | shasum -a 256 -c <(printf '30f5315b882bb2577ff783042ee75f9ed005d04a8b52ec4adc851205874e8db9  -');\
+  bash -c "set - install -g orbit-online/upkg@v0.11.0; $src")
 ```
 
 ### GitHub action

upkg.sh

@@ -94,7 +94,7 @@ upkg_install() {
       exec 7<>"$deps_lock"; flock -sn 7 # Automatically released once this subshell exits
       touch "$deps_sntl"
       rm "$locks_acq_sntl" # All locks acquired
-      while [[ -e $deps_sntl ]]; do sleep .01; done )&
+      while [[ -e $deps_sntl ]]; do sleep .01; done )& # Release locks once all deps have finished preparing
     while [[ -e $locks_acq_sntl ]]; do sleep .01; done
     ( [[ ! -e "$pkgpath/upkg.json" ]] || curversion=$(jq -r '.version' <"$pkgpath/upkg.json")
     # Ensure deps sentinel is removed if we error out before calling upkg_install, also signal error to all other procs