App Launch Hook - Rez

This hook is executed to launch applications, potentially in a Rez context.

It is NOT official/supported by Shotgun Software, but by third-party contributors

Please note that this requires Rez to be installed as a package, i.e. able to rez env rez, which exposes the Rez Python API.

With a proper Rez installation, you can do this by running rez-bind rez.

To keep a copy of the original rez_app_launch.py, there are 2 variants available:

• tk-config-default2 is the latest pipeline configuration style

  • Currently supported by Shotgun Software
  • Will be targeting this going forward for rez_app_launch.py

• tk-config-default is the legacy pipeline configuration style

  • Less supported by Shotgun Software
  • The original rez_app_launch.py, only updated to keep it functional

As of writing, the 2 rez_app_launch.py was tested at WWFX UK using rez 2.28.0. Newer rez versions may be tested in the future.

Installation

1. Setup custom pipeline configuration for your Shotgun project

   See "Advanced project setup" steps video or checkout this official tutorial page

2. Identify whether your pipeline configurations are based off tk-config-default2 or tk-config-default (legacy)

The Python hook and example .yml configuration files are setup in a way that mimics the folder structure where you need to copy them into.

<config> will now refer to the full path to the folder which contain core, env, hooks.

See this point in this video

tk-config-default2

1. Create <config>/hooks/tk-multi-launchapp folder if it does not exist.
2. Copy tk-config-default2/hooks/tk-multi-launchapp/rez_app_launch.py into that folder.

tk-config-default (legacy)

1. Create <config>/hooks folder if it does not exist (highly unlikely).
2. Copy tk-config-default2/hooks/rez_app_launch.py into that folder.

Usage

After setting up the advanced pipeline configurations and copying in the Python hook file, setting up applications to be launched from Rez are done by:

1. Defining applications to be launched
2. Exposing those applications to be launched in various Shotgun apps

Then, you should be able to see and launch applications in rez context in:

• Shotgun Create app: setup by tk-desktop2
• Shotgun Desktop app: setup by tk-desktop
• Menus in the Shotgun Website: setup by tk-shotgun
• Shotgun Shell: setup by tk-shell

tk-config-default2

If you are using tk-config-default2 v1.2.11 and have the patch program available, you can do these remaining steps by simply running in the terminal (tested on Linux):

patch --strip=0 < tk-config-default2/example-configs.patch

It might work with other versions/permutations of pipeline configurations but not guaranteed.

Otherwise, manually...

1. Create new settings.tk-tk-multi-launchapp.* application configurations inside <config>/env/includes/settings/tk-multi-launchapp.yml.

   Here is an example for Maya. This assumes you have a maya rez package built, installed and available i.e. rez env maya.

   # rez Maya 2019
   settings.tk-multi-launchapp.maya:
    engine: tk-maya
    versions:  # Tip! These will be substituted as {version}
      - 2019.0
      - 2019.2
    extra:
      rez:
        packages:
        - "maya-{version}"  # i.e. maya-2019.0
        # # Optional, additional rez packages
        # - studio_maya_tools-1.2
        # - show_maya_tools-dev
        parent_variables:
        - PYTHONPATH
        - MAYA_MODULE_PATH
        - MAYA_SCRIPT_PATH
    menu_name: "Maya 2019"
    location: "@apps.tk-multi-launchapp.location"
    # --- IMPORTANT ---
    # Point to rez_app_launch.py hook location
    hook_app_launch: "{config}/tk-multi-launchapp/rez_app_launch.py"
    # What to run after entering "rez env maya" to launch Maya, e.g.
    linux_path: "maya"
    mac_path: "Maya.app"
    windows_path: "maya.exe"

2. Expose those settings.tk-tk-multi-launchapp.* application configurations for Shotgun apps which launches applications

   i.e. inside <config>/env/includes/settings/:

   tk-desktop.yml

   ```yaml settings.tk-desktop.project: apps: tk-multi-pythonconsole: location: "@apps.tk-multi-pythonconsole.location" tk-multi-devutils: location: "@apps.tk-multi-devutils.location" tk-multi-launchapp: "@settings.tk-multi-launchapp" tk-multi-launchhiero: "@settings.tk-multi-launchapp.hiero" tk-multi-launchmari: "@settings.tk-multi-launchapp.mari" tk-multi-launchmaya: "@settings.tk-multi-launchapp.maya" # Added this for rez Maya 2019! ```
   tk-desktop2.yml

   ```yaml # project settings.tk-desktop2.all: apps: tk-multi-launchapp: "@settings.tk-multi-launchapp" tk-multi-launchhiero: "@settings.tk-multi-launchapp.hiero" tk-multi-launchmari: "@settings.tk-multi-launchapp.mari" tk-multi-launchmaya: "@settings.tk-multi-launchapp.maya" # Added this for rez Maya 2019! ```
   tk-shell.yml

   ```yaml # Same for other settings.tk-shell.* settings.tk-shell.asset: apps: tk-multi-launchapp: '@settings.tk-multi-launchapp' tk-multi-launchmaya: "@settings.tk-multi-launchapp.maya" # Added this for rez Maya 2019! tk-multi-launchmari: '@settings.tk-multi-launchapp.mari' ```
   tk-shotgun.yml

   ```yaml # Same for other settings.tk-shotgun.* settings.tk-shotgun.asset: apps: tk-multi-launchapp: "@settings.tk-multi-launchapp" tk-multi-launchmari: "@settings.tk-multi-launchapp.mari" tk-multi-launchmaya: "@settings.tk-multi-launchapp.maya" # Added this for rez Maya 2019! tk-multi-launchmotionbuilder: "@settings.tk-multi-launchapp.motionbuilder" ```

tk-config-default (legacy)

If you are using tk-config-default v0.18.2 and have the patch program available, you can do these remaining steps by simply running in the terminal (tested on Linux):

patch --strip=0 < tk-config-default/example-configs.patch

It might work with other versions/permutations of pipeline configurations but not guaranteed.

Otherwise, manually...

1. Create new application configurations inside, e.g. "launch_rez_maya_2019" <config>/env/includes/app_launchers.yml.

   Here is an example for Maya. This assumes you have a maya rez package built, installed and available i.e. rez env maya.

   #
   # -------------------------------------------------
   # rez Maya 2019
   # -------------------------------------------------
   launch_rez_maya_2019:
    engine: tk-maya
    versions:  # Tip! These will be substituted as {version}
      - 2019.0
      - 2019.2
    extra:
      rez_packages:
      - "maya-{version}"  # i.e. maya-2019.0
      # # Optional, additional rez packages
      # - studio_maya_tools-1.2
      # - show_maya_tools-dev
    hook_app_launch: rez_app_launch
    hook_before_app_launch: default
    icon: '{target_engine}/icon_256.png'
    linux_path: "maya"
    location:
      version: v0.9.15
      type: app_store
      name: tk-multi-launchapp
    mac_path: "Maya.app"
    menu_name: Rez Maya 2019
    windows_path: "maya.exe"

2. Expose those application configurations for Shotgun environment/apps which launches applications.

   i.e. inside <config>/env/, look for usages of "launch_maya" and create a copy of it but for "launch_rez_maya_2019"

   Check out the tk-config-default/env/*.yml example configuration files for more info.