Research possible approaches to speeding up dependencies portion of CI builds

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#1,084 opened on Feb 22, 2017 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 4/5
Estimated time: 3-5 days
Newbie friendliness: 35/100

Issue type: Refactor
Clarity: Mostly clear
Activity status: Stale
Tech stack: javascript, node.js
Domain: ci-cd

Research direction

Start with circle.yml and the listed dependencies override commands. Measure the current yarn global add, node-sass, yarn install, and bower install timings, then research faster approaches for those steps. Done means documenting viable options and their expected or measured impact on CI build time.

Written by the indexing model from the issue text.

Description

Difficulty: Easy

Problem

Our circle.yml does the following at time of writing:

dependencies:
  pre:
    - |
      if [[ ! -e ~/.yarn/bin/yarn || $(yarn --version) != "${YARN_VERSION}" ]]; then
        curl -o- -L https://yarnpkg.com/install.sh | bash -s -- --version $YARN_VERSION
      fi
  cache_directories:
    - ~/.yarn
    - ~/.cache/yarn
    - /home/ubuntu/nvm/versions/node/v6.9.4/bin
    - /home/ubuntu/nvm/versions/node/v6.9.4/lib/node_modules
  override:
    - yarn global add bower
    - yarn global add phantomjs-prebuilt
    - yarn add node-sass
    - yarn install
    - bower install

The slowest steps of the override are as follows:

yarn global add bower ~10s
yarn global add phantomjs-prebuilt ~10s
yarn add node-sass ~25s
yarn install ~25s

Someone should research if there is any way to speed any of these steps up.

Dominant language: JavaScript
Stars: 120
Forks: 75
PR merge metrics: No merged PRs in 30d

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