bug#67550: python-pytest-sanic 1.9.1 is not building

[jrballesteros05]

Hello Guix team. I was trying to build platformio for Guix but I am 
struggling with one of its dependencies:

platformio depends on python-ajsonrpc, which depends on 
python-pytest-sanic.

 guix shell python-ajsonrpc
14.4 MB will be downloaded
 guile-3.0.9-debug  6.8MiB                           2.9MiB/s 00:02 
▕██████████████████▏ 100.0%
substitute: updating substitutes from 'https://ci.guix.gnu.org'... 
100.0%
The following derivations will be built:
  /gnu/store/sm87710ng5piz8dcj521j8fld6l9266y-python-sanic-21.12.1.drv
  
/gnu/store/9vv8s6ay7276k3n5jpv860ga1lx4b2h8-python-sanic-testing-22.3.0.drv
  
/gnu/store/i1f18bd1fp8c4vkml6wq3b6v46pih486-python-sanic-bootstrap-21.12.1.drv
  
/gnu/store/rwdqskbgw48bvjdjglx6wiigxfml6zrl-python-pytest-sanic-1.9.1.drv
  /gnu/store/09ymhk66i5g318hxfvc13lv4gi6wkg6i-python-quart-0.17.0.drv
  /gnu/store/pdbvgh7dkc3qm7v1iaxsz4gzay2nxb2p-python-ajsonrpc-1.2.0.drv

32.3 MB will be downloaded
 python-pycparser-2.21-doc  19KiB                    1.0MiB/s 00:00 
▕██████████████████▏ 100.0%
 glibc-2.35  9.3MiB                                  6.3MiB/s 00:01 
▕██████████████████▏ 100.0%
 gzip-1.12  83KiB                                    2.6MiB/s 00:00 
▕██████████████████▏ 100.0%
 glibc-2.35-static  1.6MiB                           5.6MiB/s 00:00 
▕██████████████████▏ 100.0%
 libfontenc-1.1.4  14KiB                             4.7MiB/s 00:00 
▕██████████████████▏ 100.0%
 glibc-2.35-debug  19.3MiB                           6.5MiB/s 00:03 
▕██████████████████▏ 100.0%
 mkfontscale-1.2.2  20KiB                            3.9MiB/s 00:00 
▕██████████████████▏ 100.0%
 texinfo-6.8  1.3MiB                                 4.0MiB/s 00:00 
▕██████████████████▏ 100.0%
 mkfontdir-1.0.7  4KiB                               798KiB/s 00:00 
▕██████████████████▏ 100.0%
building 
/gnu/store/rwdqskbgw48bvjdjglx6wiigxfml6zrl-python-pytest-sanic-1.9.1.drv...
- 'sanity-check' phasebuilder for 
`/gnu/store/rwdqskbgw48bvjdjglx6wiigxfml6zrl-python-pytest-sanic-1.9.1.drv' 
failed with exit code 1
build of 
/gnu/store/rwdqskbgw48bvjdjglx6wiigxfml6zrl-python-pytest-sanic-1.9.1.drv 
failed
View build log at 
'/var/log/guix/drvs/rw/dqskbgw48bvjdjglx6wiigxfml6zrl-python-pytest-sanic-1.9.1.drv.gz'.
building 
/gnu/store/09ymhk66i5g318hxfvc13lv4gi6wkg6i-python-quart-0.17.0.drv...
cannot build derivation 
`/gnu/store/sm87710ng5piz8dcj521j8fld6l9266y-python-sanic-21.12.1.drv': 
1 dependencies couldn't be built
guix shell: error: build of 
`/gnu/store/sm87710ng5piz8dcj521j8fld6l9266y-python-sanic-21.12.1.drv' 
failed


I think the problem is related to this:

https://github.com/yunstanford/pytest-sanic/issues/68

In my own tests I modified the package with this:

(arguments
     ;; Tests depend on python-sanic.
     `(#:tests? #f
       #:phases (modify-phases %standard-phases
                    (add-after 'unpack 'fix-websocket-version
                    ;; 
https://github.com/yunstanford/pytest-sanic/issues/60
                    (lambda _
                      ;; Fixing websocket version required
                      (substitute* "setup.py"
                        (("websockets>=9.1,<11.0")
                         "websockets>=9.1"))))
       )))

The package was built OK but I am not sure if this workaround is OK. 
Best regards.