How to use julia package at a certain commit?

Question

A new version of a julia package causes a problem in my project. I could use Pkg.pin to use the package at some version and I could use Pkg.checkout to use the package in a certain github branch, but how to use the package at a certain github commit? So I could find out which commit actually causes the issue in my project.

Answer 1

To answer the original question, we can add a package at a specified commit, by specifying the commit-sha1 as follows:

(@v1.6) pkg> add Example#commitSHA1

by replacing the commitSHA1 with the commit-sha1 of the required commit of the package.

See the Pkg docs for more.

Answer 2

Every Julia package is just a git repo, you could always do source code management stuff using git from the command line, and use some full-featured git commands like git bisect to find out that commit.

X-ref: How to use git bisect?