I'm building a python script to format files not tracked by pants (rogue python scripts, markdown, html, json, yaml, etc.) and was wondering if the

requirements.txt

file will install a dependency in CI to give my script access to it from the shell. Now, I could just load

black

as a module but I'd rather have all commands for

black

,

prettier

,

scalafmt

, and any other formatters to be handled the same exact way (subprocess.run). Will

black

be available from the shell w/ the requirements.txt file specifying

black

as a dep?

Hi Ken! You'd need to install your

requirements.txt

independently of Pants, like directly creating a virtual environment and doing

pip install -r reqs.txt

. When Pants installs dependencies, it does so in a sandbox and it is not exposed to the general system

Thx! This was my concern.

Alternatively, Pants 2.9 added

./pants export

which will create a virtual environment of your

constraints.txt

if you're using

[python].requirement_constraints

interesting. I'll give that a look.