Potential dependency conflicts between ambient-aprs and urllib3

[NeolithEra]

Hi, as shown in the following full dependency graph of ambient-aprs, ambient-api requires urllib3 * ， while the installed version of _requests _(2.22.0) requires urllib3 <1.26,>=1.21.1.

According to Pip's “first found wins” installation strategy, urllib3 1.25.7 is the actually installed version.

Although the first found package version urllib3 1.25.7 just satisfies the later dependency constraint （urllib3 <1.26,>=1.21.1), it will lead to a build failure once developers release a newer version of urllib3.

Dependency tree--------

ambient-aprs - 0.11.2
| +- ambient-api(install version:1.5.2 version range:*)
| | +- requests(install version:2.22.0 version range:*)
| | | +- certifi(install version:2019.11.28 version range:>=2017.4.17)
| | | +- chardet(install version:3.0.4 version range:<3.1.0,>=3.0.2)
| | | +- idna(install version:2.8 version range:>=2.5,<2.9)
| | | +- urllib3(install version:1.25.7 version range:<1.26,>=1.21.1)
| | +- urllib3(install version:1.25.7 version range:*)

Thanks for your attention.
Best,
Neolith

[NeolithEra]

Suggested Solution

1. Ask your upstream project ambient-api to fix his direct dependencies to be urllib3 <1.26.
2. Ask your upstream project request to loose the version range of urllib3 to be >=1.21.1.

@avryhof Which solution do you prefer, 1 or 2?
Please let me know your choice. May I pull a request to solve this issue?