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Hello everyone! I’m back to annoy y’all lol. So so...
# general
w
Hello everyone! I’m back to annoy y’all lol. So something odd is going on here… I migrated from v1 to v2 and when building a .pex of my application it can’t find the first-party libs anymore. I’m using the same version, everything is the same (code-wise) other than the pants version and required target changes on BUILD files. I even went to my other branch (with pants v1) and built it again, unzipped the 
pex
file and they are pretty much the same.. have the same 
.deps
the libs are there.. 
__init__
files where they should be… so I’m very confused.. I’ve been trying to troubleshoot this for a while but now I’m kinda puzzled/stuck.
j
When you say "`__init__.py` files are where they should be", do you mean in the pex the v1 built or in your repo before they are built? Also, does your 
pants.toml
allow py2 and py3? If so, I have found that I need to explicitly declare my `pex_binary`'s compatibility to get the pex I am looking for.
w
I mean that everything looks like to be the same… files are at the same location in both cases. And no, I have my interpreter_constraints set to 
>=3.7,<3.8
but I can give that a shot
h
try 
zip_safe=False
in the 
pex_binary
(formerly 
python_binary
) target also
w
Nope, didnt work 😞
😕 1
That’s what I have for my 
pex_binary
Copy code
pex_binary(
  name = "rasa_bot_pex",
  entry_point = "rasa",
  dependencies = [
    # We don't have any import statements (nor python files).
    # Inference won't work here.
    "libs/rasa_services",
    "libs/rasa_clue_components",
    "libs/rasa_toolbox",
  ],
  output_path="rasa_bot.pex",
  compatibility = "CPython>=3.7,<3.8",
  zip_safe=False,
)
👍 1
the difference on v1 BUILD and v2 is that now I only have those first-party libs declared under dependencies.. the rest pants magically figures it out. Oh and I added the zip_safe and compatibility now.
👍 1
Is there any way that I can run that 
.pex
and open the python interpreter (or ipython) so I can try to manually import and debug things?
j
You mean run the project in a 
repl
? Isn't that the same thing? 
pants repl --shell=ipython project/src/python/rasa_bot:rasa_bot_pex
Did you use 
diff -r dir1 dir2
to compare the pex's from v1 and v2?
h
You can use 
./pants run path/to:pex
, but it’s slightly different in that the source files won’t go into that pex, only third party deps will go in
f
you can also run the pex with 
PEX_INTERPRETER=1
to get a repl
🤩 2
w
No, I did not use 
diff
but I should have used it.
@jolly-midnight-72759 didnt know I could do that, pretty cool. @fast-nail-55400 yup, that’s exactly what I was looking for!
interesting… it actually imported it 😕 on repl
j
Did you move the pex to a python venv or another box? If you are using your regular python interpreter and PEX doesn't create a chroot/venv, then the missing libraries might be on your path.
h
What do you mean it actually imported it?
w
ran a basic: 
from my_lib import MyClass
and it found it and imported it.
when I run the 
.pex
directly it gives me a ModuleNotFoundError
No, @jolly-midnight-72759, did not. Just using good old pyenv with py3.7 and running 
./rasa_bot.pex
j
Does 
from my_lib import MyClass
work when you use that same py3.7's repl (sans pex)?
👍 1
w
yes
well, actually no, I have to do a 
poetry shell
(or poetry run) first to have that under my venv
h
Oh, Thales, compare the 
PEX-INFO
file from before and after also. Iirc, it’s at the top level of the unzipped pex
👍 1
w
wait
Copy code
{
  "asctime": "2020-10-20 14:39:54,452",
  "module": "run",
  "funcName": "serve_application",
  "lineno": 193,
  "message": "Starting Rasa server on <http://localhost:5005>"
}
what kind of wizardry is this?
h
I don’t know hah, what’s the context of this?
w
that’s the expected output lol
❗ 1
j
Was that run within the 
poetry shell
?
w
I have a theory, let me test something here and I’ll get back with some sort of reasonable explanation
🔬 2
👍 1
No, that was actually me running the .pex that wasnt working before lol
magic 1
magic
Alright so it was my lack of attention. It was failing to import a first-party lib but the actual error was not finding a 3rdparty dependency. One of them pants wasnt able to find due to weird naming convention so I had to add it to 
module_mapping
and then everything kinda worked. It wasn’t happening on v1 because I was explicitly adding all my dependencies.
👖 1
h
Ahh. Thanks for the update!
w
this little culprit here
Copy code
"python-json-logger": ["pythonjsonlogger"]
🙃 1
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