Fix uvloop 1912

[ahopkins]

Related to #2024

[codecov]

Codecov Report

Merging #2025 (23a0308) into 19.12LTS (a7d563d) will increase coverage by 0.10%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           19.12LTS    #2025      +/-   ##
============================================
+ Coverage     89.84%   89.94%   +0.10%     
============================================
  Files            25       25              
  Lines          2945     2945              
  Branches        546      546              
============================================
+ Hits           2646     2649       +3     
+ Misses          224      222       -2     
+ Partials         75       74       -1     

Impacted Files	Coverage Δ
sanic/server.py	75.28% <0.00%> (+0.67%)	⬆️

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[ashleysommer]

Strange dependency issue happening in this branch now.
Something is causing MultiDict==5.1.0 to be installed, but this version of Sanic is pinned MultiDict==5.0.0 resulting in a PIP install error.

[ashleysommer]

Another oddity I found while trying to debug that conflict above:

ERROR: Cannot install chardet<=2.3.0 and httpcore==0.3.0 because these package versions have conflicting dependencies.

The conflict is caused by:
    The user requested chardet<=2.3.0
    httpcore 0.3.0 depends on chardet==3.*

Looks like this is related to https://github.com/sanic-org/sanic/issues/1858|
For some reason we have chardet locked to a very old version in our tox.ini, I've seen this done in the past for old requests or old pip compatibility, it can probably be removed now.

[ashleysommer]

Created #2027 to fix the TOX requirement install issues.
Merge #2027 then resync to #2025 and re-run the tests.

[ahopkins]

All good 😎