Possible to have two matrices in the same .drone.yml?

Drone Support
1

Currently drone supports matrix:

pipeline:
  build:
    image: golang:${TAG}
    commands:
      - go build
      - go test

matrix:
  TAG:
    - 1.7
    - 1.8
    - latest

is it possible to specify multiple matrix so certain command can use one vs the other

For example:

pipeline:
  build:
    image: golang:${TAG}
    matrix: matrix1
    commands:
      - go build
      - go test

  build2:
    image: golang:${TAG}
    matrix: matrix2
    commands:
      - go build
      - go test

matrix:
  name: matrix1
    TAG:
      - 1.7
      - 1.8
  name: matrix2
    TAG:
      - 1.9
      - 2.0
2

I believe you can use the when clause to limit step execution to specific matrix values:

pipeline:
  build:
    image: golang:${TAG}
    matrix: matrix1
    commands:
      - go build
      - go test

  build2:
    image: golang:${TAG}
    commands:
      - go build
      - go test
+   when:
+     matrix:
+       TAG: 1.9
  
matrix:
  TAG: [ 1.7, 1.8, 1.9, 2.0 ]

I do not think you can specify multiple tag values at this time (e.g. TAG: [ 1.9, 2.0 ]) in the when clause.

3

Note that one workaround would be to enumerate the matrix as an array (below) and to include a parameter that indicates if the step should be executed. Something like this, for example:

pipeline:
  build:
    image: golang:${TAG}
    matrix: matrix1
    commands:
      - go build
      - go test

  build2:
    image: golang:${TAG}
    commands:
      - go build
      - go test
+   when:
+     matrix:
+       BUILD2: true
  
matrix:
  include:
    - TAG: 1.7
      BUILD2: false
    - TAG: 1.8
      BUILD2: false
    - TAG: 1.9
      BUILD2: true
    - TAG: 2.0
      BUILD2: true
4

I think it would work. I will try it out and see if it makes things too complex to maintain

5

does not seem to work. does BUILD2 needs to be caps?

6

Never mind. It works. Yaml indentations!