[BUG][python-fastapi] Generated versions of PyYaml and httptools causing errors when install requirements.txt

[louissullivan4]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

When generating a server stub using python-fastapi, the requirements.txt file includes outdated dependencies:

• PyYAML==5.4.1
• httptools>=0.1.2

Attempting to install these packages with Python 3.12 (or versions below) results in installation errors due to compatibility issues with the specified versions.

Error for PyYaml:

Collecting PyYAML==5.4.1 (from -r requirements.txt (line 26))
  Using cached PyYAML-5.4.1.tar.gz (175 kB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... error
  error: subprocess-exited-with-error
  
  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [54 lines of output]
      ...
      AttributeError: cython_sources
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× Getting requirements to build wheel did not run successfully.
│ exit code: 1
╰─> See above for output.

Error for httptools:

Building wheels for collected packages: httptools
  Building wheel for httptools (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Building wheel for httptools (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [31 lines of output]
      ...
      httptools/parser/parser.c:212:12: fatal error: 'longintrepr.h' file not found
        #include "longintrepr.h"
                 ^~~~~~~~~~~~~~~
      1 error generated.
      error: command '/usr/bin/clang' failed with exit code 1
      [end of output]
  
note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for httptools
Failed to build httptools
ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (httptools)

openapi-generator version

Tested with the latest master version of openapi-generator as of 24/09/2024, and the issue still exists.

OpenAPI declaration file content or url

openapi: 3.0.0
info:
  title: mail
  version: 1.0.0
  description: A sample API to illustrate OpenAPI concepts
servers:
- url: https://localhost:3000/
paths:
  "/user":
    get:
      responses:
        '200':
          description: Successfully returned a user
          content:
            application/json:
              schema:
                type: string
      description: Returns a user

Generation Details

openapi-generator generate -i mail.yaml -g python-fastapi -o ./generated-server

Steps to reproduce

1. Generate a python-fastapi server stub using above command
2. cd ./generated-server
3. python -m venv venv
4. source ./venv/bin/activate
5. pip install -r requirements.txt
   This is where the failure hits, if you update the versions it will pass.

Related issues/PRs

PR created: 19666

Suggest a fix

Update the requirements.mustache template to include the following versions

• PyYAML>=5.4.1,<6.1.0
• httptools>=0.3.0,<0.7.0