Use git commit hash as config version marker

Replace the package version with the 12-char short commit hash as the
config version marker. This ensures that any change to the default
config triggers a reset — even between releases that share the same
version number.

build.rs emits LINUXDO_GIT_HASH (fallback: LINUXDO_BUILD_VERSION) at
compile time. Android build.gradle.kts reads LINUXDO_GIT_HASH from
the environment or falls back to `git rev-parse --short=12 HEAD`.
Both release and edge CI workflows export LINUXDO_GIT_HASH=${GITHUB_SHA::12}.

Author: fjh1997

.github/workflows/build-release.yml

@@ -58,6 +58,7 @@ jobs:
           fi
           echo "RELEASE_VERSION=${{ github.event.inputs.release_tag || github.ref_name }}" | sed 's/^RELEASE_VERSION=v/RELEASE_VERSION=/' >> "${GITHUB_ENV}"
           echo "LINUXDO_BUILD_VERSION=${{ github.event.inputs.release_tag || github.ref_name }}" | sed 's/^LINUXDO_BUILD_VERSION=v/LINUXDO_BUILD_VERSION=/' >> "${GITHUB_ENV}"
+          echo "LINUXDO_GIT_HASH=${GITHUB_SHA::12}" >> "${GITHUB_ENV}"
 
       - uses: dtolnay/rust-toolchain@stable
 
@@ -148,6 +149,7 @@ jobs:
           fi
           echo "RELEASE_VERSION=${{ github.event.inputs.release_tag || github.ref_name }}" | sed 's/^RELEASE_VERSION=v/RELEASE_VERSION=/' >> "${GITHUB_ENV}"
           echo "LINUXDO_BUILD_VERSION=${{ github.event.inputs.release_tag || github.ref_name }}" | sed 's/^LINUXDO_BUILD_VERSION=v/LINUXDO_BUILD_VERSION=/' >> "${GITHUB_ENV}"
+          echo "LINUXDO_GIT_HASH=${GITHUB_SHA::12}" >> "${GITHUB_ENV}"
 
       - uses: actions/setup-java@v4
         with:

.github/workflows/publish-edge-pre-release.yml

@@ -72,6 +72,7 @@ jobs:
           "$PYTHON_BIN" ./scripts/ci-sync-version.py
           echo "RELEASE_VERSION=${base_version}-edge.${GITHUB_RUN_NUMBER}" >> "${GITHUB_ENV}"
           echo "LINUXDO_BUILD_VERSION=${base_version}-edge.${GITHUB_RUN_NUMBER}" >> "${GITHUB_ENV}"
+          echo "LINUXDO_GIT_HASH=${GITHUB_SHA::12}" >> "${GITHUB_ENV}"
 
       - uses: dtolnay/rust-toolchain@stable
 
@@ -174,6 +175,7 @@ jobs:
           "$PYTHON_BIN" ./scripts/ci-sync-version.py
           echo "RELEASE_VERSION=${base_version}-edge.${GITHUB_RUN_NUMBER}" >> "${GITHUB_ENV}"
           echo "LINUXDO_BUILD_VERSION=${base_version}-edge.${GITHUB_RUN_NUMBER}" >> "${GITHUB_ENV}"
+          echo "LINUXDO_GIT_HASH=${GITHUB_SHA::12}" >> "${GITHUB_ENV}"
 
       - uses: actions/setup-java@v4
         with:

android/app/build.gradle.kts

@@ -11,6 +11,17 @@ val generatedAssetsDir = layout.buildDirectory.dir("generated/linuxdoAssets")
 val rustBinaryProvider = providers
     .environmentVariable("LINUXDO_ANDROID_RUST_BIN")
     .orElse(repoRoot.resolve("target/aarch64-linux-android/release/linuxdo-accelerator").absolutePath)
+val gitHash: String = providers.environmentVariable("LINUXDO_GIT_HASH").getOrElse(
+    runCatching {
+        val output = ByteArrayOutputStream()
+        exec {
+            commandLine("git", "rev-parse", "--short=12", "HEAD")
+            workingDir(repoRoot)
+            standardOutput = output
+        }
+        output.toString().trim().ifEmpty { null }
+    }.getOrNull() ?: "unknown"
+)
 
 android {
     namespace = "io.linuxdo.accelerator.android"
@@ -22,6 +33,7 @@ android {
         targetSdk = 35
         versionCode = 3
         versionName = "0.1.10-android"
+        buildConfigField("String", "GIT_HASH", "\"$gitHash\"")
     }
 
     buildTypes {

android/app/src/main/java/io/linuxdo/accelerator/android/LinuxdoBinary.kt

@@ -116,7 +116,7 @@ object LinuxdoBinary {
         val configFile = configFile(context)
         val markerFile = File(configFile.parentFile, "$CONFIG_NAME.version")
         val backupFile = File(configFile.parentFile, "$CONFIG_NAME.bak")
-        val currentVersion = BuildConfig.VERSION_NAME
+        val currentVersion = BuildConfig.GIT_HASH
 
         if (configFile.exists()) {
             val markerVersion = readVersionMarker(markerFile)

build.rs

@@ -2,6 +2,9 @@ fn main() {
     println!("cargo:rerun-if-changed=assets/icons/linuxdo.ico");
     println!("cargo:rerun-if-env-changed=LINUXDO_BUILD_VERSION");
     println!("cargo:rerun-if-env-changed=RELEASE_VERSION");
+    println!("cargo:rerun-if-env-changed=LINUXDO_GIT_HASH");
+    println!("cargo:rerun-if-changed=.git/HEAD");
+    println!("cargo:rerun-if-changed=.git/refs");
 
     let build_version = std::env::var("LINUXDO_BUILD_VERSION")
         .ok()
@@ -19,6 +22,21 @@ fn main() {
         .unwrap_or_else(|| "0.0.0".to_string());
     println!("cargo:rustc-env=LINUXDO_BUILD_VERSION={build_version}");
 
+    let git_hash = std::env::var("LINUXDO_GIT_HASH")
+        .ok()
+        .filter(|value| !value.trim().is_empty())
+        .unwrap_or_else(|| {
+            std::process::Command::new("git")
+                .args(["rev-parse", "--short=12", "HEAD"])
+                .output()
+                .ok()
+                .filter(|output| output.status.success())
+                .map(|output| String::from_utf8_lossy(&output.stdout).trim().to_string())
+                .filter(|value| !value.is_empty())
+                .unwrap_or_else(|| build_version.clone())
+        });
+    println!("cargo:rustc-env=LINUXDO_GIT_HASH={git_hash}");
+
     if std::env::var("CARGO_CFG_TARGET_OS").as_deref() == Ok("windows") {
         let mut res = winresource::WindowsResource::new();
         res.set_icon("assets/icons/linuxdo.ico");

src/config.rs

@@ -7,7 +7,7 @@ use anyhow::{Context, Result, anyhow};
 use serde::{Deserialize, Serialize};
 
 const DEFAULT_APP_CONFIG: &str = include_str!("../assets/defaults/linuxdo-accelerator.toml");
-const CURRENT_CONFIG_VERSION: &str = env!("CARGO_PKG_VERSION");
+const CURRENT_CONFIG_VERSION: &str = env!("LINUXDO_GIT_HASH");
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct AppConfig {