fix skipInstallers property being ignored and document its use

README.md

@@ -28,6 +28,10 @@ The Sparrow binaries can be built from source using
 
 `./gradlew jpackage`
 
+On Linux distributions without `deb` or `rpm` packaging tools installed (such as Arch), building the installers can be skipped with
+
+`./gradlew jpackage -PskipInstallers=true`
+
 Note that to build the Windows installer, you will need to install [WiX](https://github.com/wixtoolset/wix3/releases).
 
 When updating to the latest HEAD

build.gradle

@@ -18,6 +18,7 @@ if(System.getProperty("os.arch") == "aarch64") {
     releaseArch = "aarch64"
 }
 def headless = "true".equals(System.getProperty("java.awt.headless"))
+def skipInstallers = "true".equals(findProperty("skipInstallers"))
 
 group = 'com.sparrowwallet'
 version = '2.5.4'
@@ -267,7 +268,7 @@ jlink {
         imageName = "Sparrow"
         installerName = "Sparrow"
         appVersion = "${version}"
-        skipInstaller = os.macOsX || properties.skipInstallers
+        skipInstaller = os.macOsX || skipInstallers
         imageOptions = []
         installerOptions = ['--file-associations', 'src/main/deploy/psbt.properties', '--file-associations', 'src/main/deploy/txn.properties', '--file-associations', 'src/main/deploy/asc.properties', '--license-file', 'LICENSE']
         if(os.windows) {