Is there a way to run `pex3 lock create` with the ` r` comin

Question

Is there a way to run `pex3 lock create` with the ` r` coming from `stdin` Coming from `pip compile` I can `cat requirements txt | pip compile o out txt `

bitter-ability-32190 · Answer

Oddly ``` o PATH output PATH A file to output the lock to STDOUT by default or when ` ` is specified ``` but `pex3 lock create o out lock ` fails with ```Problem parsing as a requirement Parse error at Expected W abcd ```

enough-analyst-54434 · Answer

That refers to ` o ` which you re not doing

bitter-ability-32190 · Answer

man facepalming

enough-analyst-54434 · Answer

But effectively no for the ` r` question

enough-analyst-54434 · Answer

This works to get requirements from stdout ```pex3 lock create $ echo cowsay o indent 2```

enough-analyst-54434 · Answer

Using ` r lt ` however is problematic

bitter-ability-32190 · Answer

Bummer I m generating an additional lockfile with pytorch pinned to a CUDA version In order to keep every other dep the same I m `sed` ding the version

bitter-ability-32190 · Answer

Le tme see if `$ sed ` like you suggest works

enough-analyst-54434 · Answer

You might save yourself some trouble and slap an echo in front of the whole thing to visually inspect

bitter-ability-32190 · Answer

Ah no the reqs file has hashes via ` hash` so no dice Another file isn t going to kill me use an intermediate ` txt`

enough-analyst-54434 · Answer

Wait a sec `pex3 lock update p just update this `

enough-analyst-54434 · Answer

But I m not fully following another lockfile plus hash

enough-analyst-54434 · Answer

The lock update doesn t have an option to update to a new file it mutates the one you give it if not dry run but maybe what you want almost

bitter-ability-32190 · Answer

`cp` can fix that slightly smiling face

enough-analyst-54434 · Answer

Well you weren t happy about doing effectively that with r

enough-analyst-54434 · Answer

p can be a full requirement string if that s not clear

bitter-ability-32190 · Answer

I assumed as much

bitter-ability-32190 · Answer

This `cp` is better because right now we have `pip compile` `<http requirements in|requirements in>` gt `requirements txt` `pex3` `requirements txt` gt `requirements lock` This is because people still are using `requirements txt` as an out of band lockfile and I want them to agree 100

enough-analyst-54434 · Answer

Gotcha

enough-analyst-54434 · Answer

You can then use pex3 lock export on the new lockfile you re generating with cp + lock update if you need that canonical form back again

bitter-ability-32190 · Answer

Yup

bitter-ability-32190 · Answer

works like a charm heart