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Wails Blog

Building Applications

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Wails v3 uses Task as its build system. The wails3 build and wails3 package commands are convenient wrappers around Task.

Building

Section titled “Building”

Build for the current platform:

Terminal window
wails3 build

Build for a specific platform:

Terminal window
wails3 build GOOS=windows
wails3 build GOOS=darwin
wails3 build GOOS=linux


# With architecture
wails3 build GOOS=darwin GOARCH=arm64


# Environment variable style works too
GOOS=windows wails3 build

Output goes to the bin/ directory.

Development

Section titled “Development”

Run your application with hot reload:

Terminal window
wails3 dev

This starts a file watcher that rebuilds and restarts your app on changes. The frontend dev server runs on port 9245 by default.

Terminal window
# Custom port
wails3 dev -port 3000


# Enable HTTPS
wails3 dev -s

Packaging

Section titled “Packaging”

Package your app for distribution:

Terminal window
wails3 package
wails3 package GOOS=windows
wails3 package GOOS=darwin
wails3 package GOOS=linux

This creates platform-specific packages:

Custom Build Tags

Section titled “Custom Build Tags”

Pass custom Go build tags with the -tags flag:

Terminal window
# Build with legacy GTK3 + WebKit2GTK 4.1 on Linux (default is GTK4 + WebKitGTK 6.0)
wails3 build -tags gtk3


# Build in server mode (no GUI, CGO-free)
wails3 build -tags server


# Combine multiple tags
wails3 build -tags gtk3,customtag

Tags are forwarded as EXTRA_TAGS to the underlying Taskfile. See Server Build and Linux Packaging - Legacy GTK3 Support for details.

Using Task Directly

Section titled “Using Task Directly”

For more control, use Task directly:

Terminal window
# List available tasks
wails3 task --list


# Verbose output
wails3 task build -v


# Dry run
wails3 task --dry


# Force rebuild
wails3 task build -f


# Pass variables
wails3 task darwin:build ARCH=amd64

Platform-specific tasks like linux:create:deb or darwin:build:universal are only available through Task.

Generating Assets

Section titled “Generating Assets”

Regenerate icons or update build configuration:

Terminal window
wails3 generate icons -input build/appicon.png
wails3 update build-assets -name "MyApp" -config build/config.yml -dir build