Re: [RFC PATCH] travis.yml: split into build stages

[Thomas Huth <thuth@redhat.com>]

On 08/01/2020 23.49, Alex Bennée wrote:
> The idea of this is split the build across stages so any failure in
> one stage will save time running later stages. So far I have have
> arbitrarily chosen:
> 
>   canary: up-front quick to build and run
>   platforms: common build configurations
>   rest: everything else
> 
> The ideal should be canary and platforms catch the most common and
> frequent build breakages and the "rest" aims for completeness.

I like that idea. Just two nits:

> diff --git a/.travis.yml b/.travis.yml
> index 6c1038a0f1a..648c523ce59 100644
> --- a/.travis.yml
> +++ b/.travis.yml
> @@ -17,8 +17,12 @@ cache:
>    pip: true
>    directories:
>    - $HOME/avocado/data/cache
> +stages:
> +  - canary
> +  - platforms
> +  - rest
>  
> -
> +  

White space damage #1

>  addons:
>    apt:
>      packages:
[...]
> @@ -116,28 +123,33 @@ matrix:
>          - CONFIG="--disable-user --disable-system"
>          - TEST_CMD="make check-unit check-softfloat -j3"
>          - CACHE_NAME="${TRAVIS_BRANCH}-linux-gcc-default"
> +      stage: canary
>  
>  
>      # --enable-debug implies --enable-debug-tcg, also runs quite a bit slower
>      - env:
>          - CONFIG="--enable-debug --target-list=${MAIN_SOFTMMU_TARGETS}"
>          - CACHE_NAME="${TRAVIS_BRANCH}-linux-gcc-debug"
> +      stage: rest
>  
>  
>      # TCG debug can be run just on its own and is mostly agnostic to user/softmmu distinctions
>      - env:
>          - CONFIG="--enable-debug-tcg --disable-system"
>          - CACHE_NAME="${TRAVIS_BRANCH}-linux-gcc-debug-tcg"
> +      stage: rest
>  
> -
> +      

White space damage #2

>      - env:
>          - CONFIG="--disable-linux-aio --disable-cap-ng --disable-attr --disable-brlapi --disable-libusb --disable-replication --target-list=${MAIN_SOFTMMU_TARGETS}"
> +      stage: rest
[...]
> @@ -272,6 +299,7 @@ matrix:
>          - TEST_CMD="make check-acceptance"
>        after_script:
>          - python3 -c 'import json; r = json.load(open("tests/results/latest/results.json")); [print(t["logfile"]) for t in r["tests"] if t["status"] not in ("PASS", "SKIP")]' | xargs cat
> +      stage: rest
>        addons:
>          apt:
>            packages:
> @@ -321,6 +349,7 @@ matrix:
>              - uuid-dev
>        language: generic
>        compiler: none
> +      stage: platforms
>        env:
>          - COMPILER_NAME=gcc CXX=g++-9 CC=gcc-9
>          - CONFIG="--cc=gcc-9 --cxx=g++-9 --disable-pie --disable-linux-user"

Could you maybe also make sure that we've got the same order of the tags
everywhere? Currently, you sometimes use "stage" before "env" and
sometimes after "env", that's a little bit confusing.

 Thomas