Merge pull request pkgforge-dev#4 from Samueru-sama/main

Generate `.zsync` file for delta updates

Author: PS Adithya

.github/workflows/ci.yaml

@@ -35,7 +35,7 @@ jobs:
         with:
           name: ghostty-appimage
           retention-days: 7
-          path: /tmp/ghostty-build/Ghostty-x86_64.AppImage
+          path: /tmp/ghostty-build/Ghostty-x86_64.AppImage*
 
   release_appimage:
     name: "Upload binaries to current release"
@@ -51,7 +51,7 @@ jobs:
         uses: svenstaro/upload-release-action@v2
         with:
           repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: ./Ghostty-x86_64.AppImage
+          file: ./Ghostty-x86_64.AppImage*
           tag: ${{ github.ref }}
           overwrite: true
           file_glob: true

README.md

@@ -57,10 +57,15 @@ chmod +x Ghostty-x86_64.AppImage
 
 Since AppImages are self-contained executables, there is no formal installation process beyond setting executable permissions.
 
-**To update:**
+**To update manually:**
 
-1. Download the latest AppImage package from the [releases](https://github.com/psadi/ghostty-appimage/releases) section.
-2. Follow the same steps as in the [Installation](#installation) section to make it executable and run it.
+  1. Download the latest AppImage package from the [releases](https://github.com/psadi/ghostty-appimage/releases) section.
+  2. Follow the same steps as in the [Installation](#installation) section to make it executable and run it.
+
+**Update automatically:**
+
+  1. Use [AppImageUpdate](https://github.com/AppImageCommunity/AppImageUpdate) which reads the update information in the AppImage. This is a low level tool.
+  2. Use a higher level tool that uses AppImageUpdate, like [AM](https://github.com/ivan-hc/AM) or [appimaged](https://github.com/probonopd/go-appimage/blob/master/src/appimaged/README.md) daemon, these tools also automatically handle desktop integration.
 
 ## ❓ What's Next?
 

build.sh

@@ -2,10 +2,12 @@
 
 set -e
 
+export ARCH="$(uname -m)"
 GHOSTTY_VERSION="1.0.1"
 TMP_DIR="/tmp/ghostty-build"
 APP_DIR="${TMP_DIR}/ghostty.AppDir"
 PUB_KEY="RWQlAjJC23149WL2sEpT/l0QKy7hMIFhYdQOFy0Z7z7PbneUgvlsnYcV"
+UPINFO="gh-releases-zsync|$(echo "$GITHUB_REPOSITORY" | tr '/' '|')|latest|*$ARCH.AppImage.zsync"
 
 rm -rf "${TMP_DIR}"
 
@@ -95,4 +97,4 @@ EOF
 cd "${TMP_DIR}"
 
 # create app image
-ARCH="$(uname -m)" appimagetool "${APP_DIR}"
+appimagetool -u "${UPINFO}" "${APP_DIR}"