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Build Loop dev with Browser


This page is only relevant when building the dev branch with a browser.

For Mac, please see: Build Loop dev with Mac

No matter the method used to build Loop-dev, you are testing development code. Please read this link now before continuing.

Build Development Version

For Experienced Builders

Building the development (dev branch) is not typically used for your first attempt at building the Loop app.

The instructions on this page assume you are familiar with building the Loop app using a browser as detailed on Configure to use Browser

  • You should be following along with zulipchat when using the dev branch
  • Summary build updates can be found under the One-Time Changes section

You can build any desired branch (available at LoopKit/LoopWorkspace) using the GitHub Browser build method. This section is suitable if you have already built either dev or main branch using the GitHub First-Time instructions.

The graphics on this page show the dev branch. If you want a different branch, just substitute that branch name for dev.

Overview of what you will do

  1. Your LoopWorkspace fork must have the branch you want
    • You will either add it or make sure it is up to date
    • You cannot just rename your existing branch to dev - you must get the dev branch from LoopKit
  2. When you select the action 4. Build Loop and then click on the Run Workflow dropdown, you must select dev there before clicking the green Run workflow button - see Build Branch

Check Current Branch

Your LoopWorkspace fork is at where you substitute your actual GitHub username. You need to be logged into GitHub. Review the graphic below as you go through the steps.

  1. Click on the branch icon to display the branches as shown in the lower half of the graphic below:
    • If the branch you want is not listed, then continue with Step 2
    • Otherwise, skip ahead to Update Branch
  2. Click on the New branch button and follow the Add Branch steps

steps to add a branch

Add Branch

Each step in the list below matches with the number in the graphic. In the top half of the graphic, the left side shows the initial display and the right side shows the display after making the indicated selections:

  1. Click on the drop down menu labeled 1 in the graphic and choose LoopKit/LoopWorkspace as show in the top right graphic
  2. Click on the drop down menu labeled 2 in the graphic and choose dev
  3. Click on the Branch name box labeled 3 in the graphic and type dev
    • The branch name in your fork should always match the branch name you are adding; check that you type it correctly
  4. Review the dialog items to make sure everything is correct and then tap on Create branch

steps to add a branch continued

Update Branch

Tap the Code button (upper left) and ensure this branch in your fork is up to date.

  • Select the desired branch in the dropdown menu (this graphic shows dev branch)
  • If the message indicates this branch is "behind", tap on the sync fork button and then the Update branch button

message displayed when your fork of LoopWorkspace is behind LoopKit version

One-Time Changes

Look in this section for one-time changes for building dev with a browser that require special, one-time actions.

If you have already completed the One-Time Changes, skip ahead to Build Branch.

Transition to dev

When updating from Loop 3.2.x to dev, you will need to take some extra steps.

You have a choice:

  • You can change your default branch to dev, see Change Default Branch and then your Loop app will be automatically updated and automatically built at least once a month
  • You can leave your default branch at main, but no automated updates will happen
    • Running each action below requires you to select the dev branch in the drop-down menu

Here is a summary of the extra steps; each step has an associated link. This assumes you have already updated your fork and are at the correct branch.

  1. Confirm the status of your  GitHub Personal Access Token
    • It should be configured with permission scope of repo, workflow and to never expire
    • You can check this using directions at GitHub Token
  2. Next, follow along in this section to perform these steps before you build
    • Add and Update New Indentifier
    • Create Certificates

Automatic Creation of alive branch

What about the alive branch

  • Sometimes you get an error about the alive branch
  • It should be created for you automatically if you are building with the dev branch and you have workflow permission added to the scope for your GitHub Personal Access Token
  • If necessary, delete the alive branch and run the Create Certificates again

Add and Update New Identifier

The bundle ID for the "widget" changed from "SmallStatusWidget" to the more descriptive "LoopWidgetExtension".

  • You need to run Add Identifier - be sure that you run this for the dev branch
  • Wait for it to succeed
  • Add the App Group to this one new Identifier

All other identifiers should be already set up. If they are not, please go through the steps on the Configure to Use Browser page to figure out what you are missing.

Loop Widget Extension com.TEAMID.loopkit.Loop.LoopWidgetExtension

Create Certificates and Build

You must create certificates again to cover the new Identifier name and to provide support for the addition of the Libre sensors. (This step is required whether you use Libre or not - Loop needs permission to have that capability). Once the certificate action succeeds, then run the action to build Loop.

  1. Run the Action for Create Certificates - be sure that you run this for the dev branch
  2. Run the Action for Build Loop (see Build Branch)

Build Branch

If you want a branch to be the one you build all the time, you may choose to Change Default Branch. This is not necessary except for special cases.

If you have one branch as default, for example main, and choose to build a different branch, there is an extra step when you Build Loop. Refer to step 4 in the graphic below. Use the branch dropdown menu to select the branch you want before hitting the green Run workflow button.

build loop using github actions


Change Default Branch

There can be several reasons why you would change your default branch.

  • It can be convenient to have the branch you build most be configured as the default branch
  • The branch you want to build has a different workflow than your default branch (not typical)
    • In this case, you must modify the default branch
    • Check the zulipchat conversation about the branch you are testing to see if it is necessary to make it default

These are the steps to modify the default branch.

For this example, we show how to change from a default branch of main to a default branch of dev. Note - only the owner of the repository can take this action and they must be logged in. Otherwise the Settings tab does not appear.

For the numbered steps below, refer to the graphic found under each group of steps.

  1. Click on the Settings Icon near the top right of your LoopWorkspace

    • You may need to scroll down to see the Default Branch as shown in the graphic
    • Do not tap on the Branches tab to the left under Code and Automation, that is not the correct menu

    show default branch

  2. To the right of the default branch name there is a pencil and a left-right arrow icon

    • Tap on the left-right arrow icon to bring up the Switch default branch to another branch dialog
  3. Click on the dropdown next to the current default branch, in this example, main
  4. Select the desired default branch, in this example, dev
  5. Click on the Update button

    modify default branch

  6. You will be presented with an are-you-sure question.

    • Click on the red I understand, update the default branch. button

    confirm default branch

Your default branch has been changed.

Automatic Update & Build

The automatic update and build features of the development branch are only available if you set the dev branch as your default branch. Be sure to read the Automatic Update & Build if you did this.