Global environment variables are not merged with matrix includes

[raphaelstolt]

This might be a bug or a misconfiguration on my end.

Assumed I if have the following configuration:

env:
  global:
    - excludegroup=travis-ci-exclude
    - disable-xdebug=true
    - lint=false

matrix:
  include:
    - php: hhvm
      env: disable-xdebug=false
    - php: nightly
      env: disable-xdebug=false
    - php: 7.1
      env: disable-xdebug=false lint=true
    - php: 7.0
    - php: 5.6
      env: excludegroup=travis-ci-exclude-56

On the build jobs I would expect the following environment variables set:

hhvm: excludegroup=travis-ci-exclude disable-xdebug=false lint=false
nightly: excludegroup=travis-ci-exclude disable-xdebug=false lint=false
7.1: excludegroup=travis-ci-exclude disable-xdebug=false lint=true
7.0: excludegroup=travis-ci-exclude disable-xdebug=true lint=false
5.6: excludegroup=travis-ci-exclude-56 disable-xdebug=true lint=false

But it seems like the global enviroment variables are not merged with the ones set in the matrix include so that I end up with the following environment variables set:

hhvm: disable-xdebug=false
nightly: disable-xdebug=false
7.1: disable-xdebug=false lint=true
7.0: 
5.6: excludegroup=travis-ci-exclude-56

[BanzaiMan]

Do you have a build log URL that shows the problem you are describing here?

I tested

env:
  global:
    - excludegroup=travis-ci-exclude
    - disable-xdebug=true
    - lint=false

matrix:
  include:
    - php: hhvm
      env: disable-xdebug=false
    - php: nightly
      env: disable-xdebug=false
    - php: 7.1
      env: disable-xdebug=false lint=true
    - php: 7.0
    - php: 5.6
      env: excludegroup=travis-ci-exclude-56

(https://github.com/BanzaiMan/travis_production_test/blob/b1ddff8d948e24b602f7e8a9b55178e81c111c96/.travis.yml) and got what you expect. https://travis-ci.org/BanzaiMan/travis_production_test/builds/166555701

[BanzaiMan]

Oh. Did you mean you wanted environment variables whose names contain -?

[raphaelstolt]

Nope I want the environment variables defined as global to be merged with the ones set in the matrix.

And a build where that doesn't happen would be https://travis-ci.org/raphaelstolt/lean-package-validator/builds/166436492 and the relevant .travis.yml would be https://github.com/raphaelstolt/lean-package-validator/blob/109bc0da6302c55689fd0ad27da1711cdd09d3e0/.travis.yml.

If you look at the build job for PHP 7 there are no environment variables set at all and I would expect the ones shown next, as they were set globally.

excludegroup=travis-ci-exclude disable-xdebug=true lint=false

[BanzaiMan]

- is an illegal character in bash environment variables, and it doesn't work. In https://travis-ci.org/raphaelstolt/lean-package-validator/jobs/166436499#L127-L130, you see that we set 2 of the environment variables defined in https://github.com/raphaelstolt/lean-package-validator/blob/109bc0da6302c55689fd0ad27da1711cdd09d3e0/.travis.yml#L3-L7:

$ export excludegroup=travis-ci-exclude
$ export xdebug=true
$ export lint=false

Notice that we are exporting xdebug=true, because characters up to (and including) the last illegal character (- in this case) is implicitly dropped. (This might be misleading, actually. Perhaps we should be more explicit about this.)

The other two are exported.

[raphaelstolt]

Okay didn't know that - is an illegal character in an bash environment variable. Should I create an issue that Travis lint should warn about this?

Fixed it with b279e and the global set envirionment variables are still lost. You can see it at PHP 7 where the environment variables should be $EXCLUDEGROUP=travis-ci-exclude $DISABLE_XDEBUG=true $LINT=false but Travis CI says no environment variables set.

Or is the global defintion faulty?

env:
  global:
    - EXCLUDEGROUP=travis-ci-exclude
    - DISABLE_XDEBUG=true
    - LINT=false

[BanzaiMan]

The build page (e.g., https://travis-ci.org/raphaelstolt/lean-package-validator/builds/166636690) does not show the environment variables that are set globally, since they are not defining characteristics of the jobs.

They are set just fine. https://travis-ci.org/raphaelstolt/lean-package-validator/jobs/166636694#L127-L130

I don't think there is a bug here. We should deal with illegal characters, but that should be a separate issue.

[raphaelstolt]

So how does one set an environment variable available on all php versions?

Something that avoids the duplication of OPCODE_CACHE shown next.

matrix:
  include:
    - php: hhvm
      env:
      - OPCODE_CACHE=apc
    - php: nightly
      env:
      - OPCODE_CACHE=apc
    - php: 7.1
      env:
      - OPCODE_CACHE=apc
    - php: 7.0
      env:
      - OPCODE_CACHE=apc
      - DISABLE_XDEBUG=true
      - LINT=true
    - php: 5.6
      env:
      - OPCODE_CACHE=apc
      - DISABLE_XDEBUG=true
    - php: 5.5
      env:
      - OPCODE_CACHE=apc
      - DISABLE_XDEBUG=true
    - php: 5.4
      env:
      - OPCODE_CACHE=apc
      - DISABLE_XDEBUG=true
    - php: 5.3
      env:
      - OPCODE_CACHE=apc
      - DISABLE_XDEBUG=true

This one is close, with a weird side effect of adding a undefined PHP version and also not merging both variable definitions.

The global environement variable FOO is set via:

env:
  FOO=bar

[BanzaiMan]

Common variables should go into env.global. These don't show up in the build page, but they are defined and exported. Please read your logs carefully.

[raphaelstolt]

Ah okay, expected them also to be present in the <div class="job-env"> in the build web user interface.

[raphaelstolt]

Created an issue #6707 for dealing with invalid environment variable names.