Any suggestion on continuous integration?

[FreemanTheMaverick]

Dear Prof. Valeev,

Hello. I am maintaining a quantum chemistry package that makes use of libint2 on github. I want to implement continuous integration with github's workflow, so that compiling and testing of my package will be done automatically upon push.

In the workflow, libint2 needs to be (downloaded and) compiled as a prerequisite before my own codes are compiled. However, compilation of libint2 is very slow, especially for high-order derivatives and high angular momenta. So every single push takes ages. Do you have any suggestion on reducing the time cost (other than requiring only low-order derivatives and low angular momenta)?

Thank you!

[evaleev]

A custom docker image that included libint and other prerequisites is what we use to speed up CI builds ... the idea is described in several places, e.g. https://circleci.com/docs/custom-images/ ... we use gitlab CI with a standalone runner which makes the cost of pulling such an image negligible. Not all CI setups make using custom imaged easy, though ...

cc: @loriab , who probably has a different way for solving this issue for psi4's CI.