Deselect Stages By Default - azure-devops

Question

In Azure Devops multistage YAML pipeline we got multiple environments.
In stages to run normally we do a build and deploy only in QA, so we need to deselect each stage manually. By default all stages are selected is it possible to have exact opposite, where all stages are deselected by default???
trigger: none
pr: none
stages:
- stage: 'Build'
jobs:
- deployment: 'Build'
pool:
name: Default
# testing
environment: INT
strategy:
runOnce:
deploy:
steps:
- checkout: none
- powershell: |
echo "Hello Testing"
Start-Sleep -Seconds 10
- stage: 'Sandbox'
jobs:
- job: 'Sandbox'
pool:
name: Default
steps:
- checkout: none
# testing
- powershell: |
echo "Hello Testing"
- stage: 'Test'
jobs:
- job: 'DEV'
pool:
name: Default
steps:
- checkout: none
- powershell: |
echo "Hello Testing"
- stage: 'QA'
dependsOn: ['Test','Test1','Test2']
jobs:
- job: 'QA'
pool:
name: Default
steps:
- checkout: none
# Testing
- powershell: |
echo "Hello Testing"

Answer 1

I am afraid that there is no UI (like stage to run) method that can meet your needs.
You could try to add parameters to your Yaml Sample.
Here is an example:
trigger: none
pr: none
parameters:
- name: stageTest
displayName: Run Stage test
type: boolean
default: false
- name: stageBuild
displayName: Run Stage build
type: boolean
default: false
stages:
- ${{ if eq(parameters.stageBuild, true) }}:
- stage: 'Build'
jobs:
- deployment: 'Build'
pool:
name: Default
environment: INT
strategy:
runOnce:
deploy:
steps:
- checkout: none
- powershell: |
echo "Hello Testing"
Start-Sleep -Seconds 10
- ${{ if eq(parameters.stageTest, true) }}:
- stage: Test
dependsOn: []
jobs:
- job: B1
steps:
- script: echo "B1"
The parameters are used to determine whether to run these stages. You could add expressions before the stage to check if the parameter value could meet expression.
The default value is false. This means that the stage will not run by default.
Here is the result:
You can select the stage you need to run by clicking the selection box.
Update
Workaround has some limitations. When the select stage has depenencies, you need to select all dependent stages to run.
For example:
- stage: 'QA'
dependsOn: ['Test','Test1','Test2']
On the other hand, I have created a suggestion ticket to report this feature request. Here is the suggestion ticket link: Pipeline Deselect Stages By Default You could vote and add comment in it .

Answer 2

I've used this solution to build a nuget-package, and:
always push packages from master
conditionally push packages from other branches
Using GitVersion ensures that the packages from other branches get prerelease version numbers, e.g. 2.2.12-my-branch-name.3 or 2.2.12-PullRequest7803.4. The main branch simply gets 2.2.12, so the master branch is recognized as a "regular" version.
The reason I'm repeating the answer above, is that I chose to make the stage conditional instead of using an if:
trigger:
- master
parameters:
- name: pushPackage
displayName: Push the NuGet package
type: boolean
default: false
stages:
- stage: Build
jobs:
- job: DoBuild
steps:
- script: echo "I'm building a NuGet package (versioned with GitVersion)"
- stage: Push
condition: and(succeeded('build'), or(eq('${{ parameters.pushPackage }}', true), eq(variables['build.sourceBranch'], 'refs/heads/master')))
jobs:
- job: DoPush
steps:
- script: echo "I'm pushing the NuGet package"
Like the other answer, this results in a dialog:
But what's different from the (equally valid) solution with '${{ if }}', is that the stage is always shown (even if it's skipped):