pep 503 defines the python package repo api used py pypi.org. I thought it was fun to create small repo using Flask (to host Flask) :)

The spec require two urls

root url
project url

root url return html listing available project page. the anchor tags has the following requirements

The text of the anchor tag MUST be the name of the project and the href attribute MUST link to the URL for that particular project.

<!DOCTYPE html>
<html>
  <head>
    <meta name="pypi:repository-version" content="1.0">
    <title>Simple index</title>
  </head>
  <body>
<a href="/foo/">Foo</a>
</body>
</html>

the project url, returns html with anchor tags for tar file name and href for the that tar.

<!DOCTYPE html>
<html>
  <head>
    <meta name="pypi:repository-version" content="1.0">
    <title>Links for Flask</title>
  </head>
  <body>
    <h1>Links for Flask</h1>
    <a href="/static/Foo-0.1.tar.gz">Flask-0.1.tar.gz</a><br/>
    </body>
</html>

Full source code Link to heading

pip3 install Foo --index-url  http://localhost:5000 -v


import os
from flask import Flask, send_from_directory, send_file


app = Flask(__name__, static_url_path='')

@app.route('/static/<path:filename>')
def f(filename):
    root_dir = os.getcwd()
    print(root_dir, filename)
    return send_from_directory(os.path.join(root_dir), filename)

@app.route('/')
def home():
	return """
<!DOCTYPE html>
<html>
  <head>
    <meta name="pypi:repository-version" content="1.0">
    <title>Simple index</title>
  </head>
  <body>
<a href="/foo/">Foo</a>
</body>
</html>

"""
@app.route('/foo/')
def hello_world():
    return """
<!DOCTYPE html>
<html>
  <head>
    <meta name="pypi:repository-version" content="1.0">
    <title>Links for Flask</title>
  </head>
  <body>
    <h1>Links for Flask</h1>
    <a href="/static/Foo-0.1.tar.gz">Foo-0.1.tar.gz</a><br/>
    </body>
</html>
"""

app.run(debug=True)