chore(deps): update build-emacs-for-macos to 0.6.20

Fixes an issue with patches for Emacs 29.x.

.github/workflows/_build.yml

@@ -157,6 +157,11 @@ jobs:
           name: ${{ inputs.artifact_prefix }}unsigned-app
           path: builds/*.tbz
           if-no-files-found: error
+      - name: Upload Emacs source artifact
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ inputs.artifact_prefix }}emacs-source
+          path: tarballs/*.tgz
 
   package:
     runs-on: ${{ inputs.os }}

.github/workflows/_prepare.yml

@@ -5,8 +5,9 @@ on:
     inputs:
       builder_ref:
         description: Git ref to checkout of build-emacs-for-macos
-        required: true
+        required: false
         type: string
+        default: "v0.6.20"
     secrets:
       TAP_REPO_TOKEN:
         description: Personal Access Token for Homebrew Tap repo

.github/workflows/nightly-emacs-28.yml

@@ -13,8 +13,6 @@ jobs:
   prepare:
     name: Prepare
     uses: jimeh/emacs-builds/.github/workflows/_prepare.yml@main
-    with:
-      builder_ref: v0.6.17
     secrets:
       TAP_REPO_TOKEN: ${{ secrets.TAP_REPO_TOKEN }}
 

.github/workflows/nightly-master.yml

@@ -13,8 +13,6 @@ jobs:
   prepare:
     name: Prepare
     uses: jimeh/emacs-builds/.github/workflows/_prepare.yml@main
-    with:
-      builder_ref: v0.6.17
     secrets:
       TAP_REPO_TOKEN: ${{ secrets.TAP_REPO_TOKEN }}
 

README.md

@@ -10,7 +10,11 @@
   <a href="https://github.com/jimeh/emacs-builds/releases/latest">
     <img alt="GitHub release (stable)" src="https://img.shields.io/endpoint?url=https%3A%2F%2Fraw.githubusercontent.com%2Fjimeh%2Fhomebrew-emacs-builds%2Fmeta%2FCasks%2Femacs-app%2Fshield.json">
   </a>
-  <a href="https://github.com/jimeh/emacs-builds/releases">
+  <a href="https://github.com/jimeh/emacs-builds/releases?q=emacs-28&expanded=true">
+    <img alt="GitHub release (nightly@emacs-28)" src="https://img.shields.io/endpoint?url=https%3A%2F%2Fraw.githubusercontent.com%2Fjimeh%2Fhomebrew-emacs-builds%2Fmeta%2FCasks%2Femacs-app-nightly-28%2Fshield.json">
+  </a>
+  <br />
+  <a href="https://github.com/jimeh/emacs-builds/releases?q=master&expanded=true">
     <img alt="GitHub release (nightly)" src="https://img.shields.io/endpoint?url=https%3A%2F%2Fraw.githubusercontent.com%2Fjimeh%2Fhomebrew-emacs-builds%2Fmeta%2FCasks%2Femacs-app-nightly%2Fshield.json">
   </a>
   <a href="https://github.com/jimeh/emacs-builds/issues/7">
@@ -95,7 +99,8 @@ any issues.
    brew tap jimeh/emacs-builds
    ```
 2. Install one of the available casks:
-   - `emacs-app-nightly` for the latest nightly build:
+   - `emacs-app-nightly` for the latest nightly build from Emacs' `master`
+     branch:
      ```
      brew install --cask emacs-app-nightly
      ```
@@ -103,6 +108,11 @@ any issues.
      ```
      brew install --cask emacs-app-good
      ```
+   - `emacs-app-nightly-28` for the latest Emacs 28.x nightly build from the
+     `emacs-28` branch:
+     ```
+     brew install --cask emacs-app-nightly-28
+     ```
    - `emacs-app` for the latest stable release of Emacs (does not include
      native-comp at time of writing):
      ```