Add freeze command

[abhi3700]

Description

This PR is to add freeze command in huak so that it can create a requirements.txt file in the same directory as pyproject.toml.

Usage

In a project with pyproject.toml:

[build-system]
requires = ["hatchling"]
build-backend = "hatchling.build"

[project]
name = "flet-demo"
version = "0.0.1"
description = ""
dependencies = [
    "flet ==0.21.2",
]

[project.optional-dependencies]
dev = [
    "build==1.2.1",
]

[tool.huak.task]
counter = "python3 src/flet_demo/counter.py"
todo = "python3 src/flet_demo/todo.py"

$ huak freeze works like this:

$ huak freeze
Dependencies extracted successfully.

with requirements.txt as:

flet==0.21.2

---

To create a custom file:

$ huak freeze -n deps.txt
Dependencies extracted successfully.

with deps.txt as:

flet==0.21.2

[cnpryer]

Hi thanks for the PR!

Is huak run pip freeze > requirements.txt sufficient?

[abhi3700]

Hi thanks for the PR!

Is huak run pip freeze > requirements.txt sufficient?

No. Because that adds all the other dependencies that may not be required like this:

Details:

annotated-types==0.6.0
anyio==4.3.0
arrow==1.3.0
binaryornot==0.4.4
build==1.2.1
certifi==2024.2.2
chardet==5.2.0
charset-normalizer==3.3.2
click==8.1.7
cookiecutter==2.6.0
fastapi==0.110.0
flet==0.21.2
flet-core==0.21.2
flet-runtime==0.21.2
h11==0.14.0
httpcore==1.0.5
httptools==0.6.1
httpx==0.27.0
idna==3.6
Jinja2==3.1.3
markdown-it-py==3.0.0
MarkupSafe==2.1.5
mdurl==0.1.2
oauthlib==3.2.2
packaging==23.2
pydantic==2.6.4
pydantic_core==2.16.3
Pygments==2.17.2
pypng==0.20220715.0
pyproject_hooks==1.0.0
python-dateutil==2.9.0.post0
python-dotenv==1.0.1
python-slugify==8.0.4
PyYAML==6.0.1
qrcode==7.4.2
repath==0.9.0
requests==2.31.0
rich==13.7.1
six==1.16.0
sniffio==1.3.1
starlette==0.36.3
text-unidecode==1.3
types-python-dateutil==2.9.0.20240316
typing_extensions==4.10.0
urllib3==2.2.1
uvicorn==0.29.0
uvloop==0.19.0
watchdog==4.0.0
watchfiles==0.21.0
websockets==12.0

In fact, the intension is to just add the pyproject.toml dependencies into requirements.txt. This would:

• reduce the requirements.txt file size.
• Also, don't have to duplicate the sub-dependencies in case of multiple project dependencies (here just one is there i.e. flet)

[cnpryer]

I see but then we are defining what freeze means ourselves as something different, and I don't really like that definition. The point of freezing to a requirements file is to take a snapshot of the current environment.

I think what you're looking for is a way to export the pyproject.toml to a requirements file.

Another thing to note is that I plan to bundle uv with Huak. So at some point uv can be used for environment reproducibility.

[abhi3700]

Well I can change the name if that's not matching the purpose. Also, didn't know about uv merging plan.

But, can we reproduce this with uv?

Moreover, I personally don't like uv as it is nowhere close to Rust's cargo-like package manager, which huak is pretty much close to.