stub out some json diffing

Author: MattSturgeon

.github/workflows/new-plugin.yml

@@ -25,28 +25,47 @@ jobs:
 
       - name: Get plugins info
         run: |
-          OLD="$(
+          OLD_PLUGINS=$(
             nix eval 'github:${{ github.repository }}/${{ github.event.before }}#nixvimConfiguration.options.plugins' \
               --apply 'builtins.attrNames' \
               --json
-          )"
-          NEW="$(
+          )
+          NEW_PLUGINS=$(
             nix eval '.#nixvimConfiguration.options.plugins' \
               --apply 'builtins.attrNames' \
               --json
-          )"
-          # TODO: compare OLD and NEW
+          )
+          OLD_COLORSCHEMES=$(
+            nix eval 'github:${{ github.repository }}/${{ github.event.before }}#nixvimConfiguration.options.colorschemes' \
+              --apply 'builtins.attrNames' \
+              --json
+          )
+          NEW_COLORSCHEMES=$(
+            nix eval '.#nixvimConfiguration.options.colorschemes' \
+              --apply 'builtins.attrNames' \
+              --json
+          )
+          PLUGIN_JSON="{ \"old\": $OLD_PLUGINS, \"new\": $NEW_PLUGINS }"
+          COLORSCHEME_JSON="{ \"old\": $OLD_COLORSCHEMES, \"new\": $NEW_COLORSCHEMES }"
+
+          # Compare OLD and NEW
+          PLUGINS_ADDED=$(echo "$PLUGIN_JSON" | jq '.new-.old')
+          PLUGINS_REMOVED=$(echo "$PLUGIN_JSON" | jq '.old-.new')
+          COLORSCHEMES_ADDED=$(echo "$COLORSCHEME_JSON" | jq '.new-.old')
+          COLORSCHEMES_REMOVED=$(echo "$COLORSCHEME_JSON" | jq '.old-.new')
+
+          # TODO: write to GITHUB_OUTPUT
 
       - name: Get PR info
         env:
           GH_TOKEN: ${{ github.token }}
         run: |
-          if JSON="$(
+          if JSON=$(
             gh api  \
               -H "Accept: application/vnd.github+json" \
               -H "X-GitHub-Api-Version: 2022-11-28" \
               /repos/${{ github.repository }}/commits/${{ github.sha }}/pulls
-          )"
+          )
           then
             # TODO: use PR info
           else