feat: Check presence of jq before installing

[yangchoo]

what

• Check presence of specified jq version before installing

why

• The jq install step is observed to occasionally take up to 45s as it depends on apt update
• This temporarily resolves the issue by checking for the presence of the specified jq version before installing

references

• See Pre: Install jq step is a bottleneck #61

[yangchoo]

Hmm unable to preview the error in CircleCI. I wonder if its a variable substitution issue?

I've tested locally via docker run

❯ docker run cimg/python:3.9 sudo apt show jq | grep "Version: 1.6-2.1ubuntu3" || echo "run install step"


WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

Version: 1.6-2.1ubuntu3
❯ docker run cimg/python:3.9 sudo apt show jq | grep "Version: 1.6-2.1invalid" || echo "run install step"


WARNING: apt does not have a stable CLI interface. Use with caution in scripts.

run install step

[emmeowzing]

Oh, cimg/python already has jq installed? Yeah, I like this. Good catch!

[emmeowzing]

@yangchoo this fix has been released with the 3.6.9 release.