Fix agent update version

[achaiah]

Pip install command is missing the '==' to execute successfully

[jkhenning]

Hi @achaiah,

Thanks for your contribution!
Actually, the current implementation has its rational - it allows you to specify both exact versions (by setting CLEARML_AGENT_UPDATE_VERSION="==1.2.3" as well as other constraints (e.g. CLEARML_AGENT_UPDATE_VERSION="<=1.2.3")

[achaiah]

Hmm... this is an "interesting" solution as I wouldn't have expected this format when providing an ENV variable. What's worse, it doesn't really produce any errors when you simply provide the version without the "==" which is what threw me for a loop in the first place.

I expected to be able to provide just the version number. Is this behavior documented anywhere? I had to dig through the source code to figure it out but I'm new to ClearML.

[jkhenning]

I'm not sure it's documented, but maybe the best thing to do is to simply add the option to provide a simple version as well (for example testing if the string is in "d.d" or "d.d.d" format and if so, append "=="?

[achaiah]

Ok I think your suggestion would work. Please take a look at the regex that I added.

[jkhenning]

Looks good. Maybe you'd like to add support there for RC versions (in the format 1.2.3rc7)?

[achaiah]

Ugh..lol yeah, the regex gets more complicated but I think I got it