[BUG] Prospector 1.1.* not compatible with flake8

[mattseymour]

Describe the bug
Prospector is not compatible with flake8 due to dependencies mismatch. Flake8 (version >3.7) has a requirement for pycodestyle (>=2.5.0,<2.6.0). Prospector has a requirement for pycodestyle (>=2.0.0,<=2.4.0) which causes a dependency mismatch. Ideally, prospector should be supporting 2.5.0.

Expected behavior
Prospector requirements to be closer in line to flake8.

Screenshots

[SolverProblemError]                                                                                                                                                                                                                                                 
Because no versions of flake8 match >3.7,<3.7.1 || >3.7.1,<3.7.2 || >3.7.2,<3.7.3 || >3.7.3,<3.7.4 || >3.7.4,<3.7.5 || >3.7.5,<3.7.6 || >3.7.6,<3.7.7 || >3.7.7,<3.7.8 || >3.7.8,<3.7.9 || >3.7.9,<4.0                                                                            
 and flake8 (3.7.0) depends on pycodestyle (>=2.5.0,<2.6.0), flake8 (>=3.7,<3.7.1 || >3.7.1,<3.7.2 || >3.7.2,<3.7.3 || >3.7.3,<3.7.4 || >3.7.4,<3.7.5 || >3.7.5,<3.7.6 || >3.7.6,<3.7.7 || >3.7.7,<3.7.8 || >3.7.8,<3.7.9 || >3.7.9,<4.0) requires pycodestyle (>=2.5.0,<2.6.0).  
And because flake8 (3.7.1) depends on pycodestyle (>=2.5.0,<2.6.0)                                                                                                                                                                                                                
 and flake8 (3.7.2) depends on pycodestyle (>=2.5.0,<2.6.0), flake8 (>=3.7,<3.7.3 || >3.7.3,<3.7.4 || >3.7.4,<3.7.5 || >3.7.5,<3.7.6 || >3.7.6,<3.7.7 || >3.7.7,<3.7.8 || >3.7.8,<3.7.9 || >3.7.9,<4.0) requires pycodestyle (>=2.5.0,<2.6.0).                                    
And because flake8 (3.7.3) depends on pycodestyle (>=2.5.0,<2.6.0)                                                                                                                                                                                                                
 and flake8 (3.7.4) depends on pycodestyle (>=2.5.0,<2.6.0), flake8 (>=3.7,<3.7.5 || >3.7.5,<3.7.6 || >3.7.6,<3.7.7 || >3.7.7,<3.7.8 || >3.7.8,<3.7.9 || >3.7.9,<4.0) requires pycodestyle (>=2.5.0,<2.6.0).                                                                      
And because flake8 (3.7.5) depends on pycodestyle (>=2.5.0,<2.6.0)                                                                                                                                                                                                                
 and flake8 (3.7.6) depends on pycodestyle (>=2.5.0,<2.6.0), flake8 (>=3.7,<3.7.7 || >3.7.7,<3.7.8 || >3.7.8,<3.7.9 || >3.7.9,<4.0) requires pycodestyle (>=2.5.0,<2.6.0).                                                                                                        
And because flake8 (3.7.7) depends on pycodestyle (>=2.5.0,<2.6.0)                                                                                                                                                                                                                
 and flake8 (3.7.8) depends on pycodestyle (>=2.5.0,<2.6.0), flake8 (>=3.7,<3.7.9 || >3.7.9,<4.0) requires pycodestyle (>=2.5.0,<2.6.0).                                                                                                                                          
And because flake8 (3.7.9) depends on pycodestyle (>=2.5.0,<2.6.0)                                                                                                                                                                                                                
 and prospector (1.1.7) depends on pycodestyle (>=2.0.0,<=2.4.0), prospector (1.1.7) is incompatible with flake8 (>=3.7,<4.0).                                                                                                                                                    
So, because <project> depends on both flake8 (^3.7) and prospector (=1.1.7), version solving failed.```

Environment (please complete the following information):

• OS: OSX, Ubuntu
• Tool: poetry, prospector, flake8
• Prospector version: 1.1.7
• Python version: 3.7

Additional context
Add any other context about the problem here. Putting the list of dependencies installed, e.g. the output of pip freeze also helps.

[ksze]

Seems similar to #332 and tangentially #307.

[chocoelho]

Closing this as it's fixed in the upcoming version 1.3.0 (available as pre-release)

[mattseymour]

Awesome, keep up the good work.

[combinatorist]

Seems to be happening again in prospector 1.3.1:

ERROR: Could not find a version that matches pycodestyle<2.7.0,<2.8.0,>=2.6.0,>=2.7.0 (from prospector==1.3.1->-r /var/folders/jj/x145vsm14b1g0z5fxf3szf300000gq/T/pipenvwoix3w7prequirements/pipenv-47u56rkx-constraints.txt (line 2))
Tried: 2.0.0, 2.0.0, 2.1.0, 2.1.0, 2.2.0, 2.2.0, 2.3.0, 2.3.0, 2.3.1, 2.3.1, 2.4.0, 2.4.0, 2.5.0, 2.5.0, 2.6.0, 2.6.0, 2.7.0, 2.7.0
Skipped pre-versions: 1.8.0.dev0, 1.8.0.dev0, 2.0.0a1, 2.0.0a1, 2.6.0a1, 2.6.0a1
There are incompatible versions in the resolved dependencies:
  pycodestyle<2.7.0,>=2.6.0 (from prospector==1.3.1->-r /var/folders/jj/x145vsm14b1g0z5fxf3szf300000gq/T/pipenvwoix3w7prequirements/pipenv-47u56rkx-constraints.txt (line 2))
  pycodestyle<2.8.0,>=2.7.0 (from flake8==3.9.2->flake8-polyfill==1.0.2->pep8-naming==0.10.0->prospector==1.3.1->-r /var/folders/jj/x145vsm14b1g0z5fxf3szf300000gq/T/pipenvwoix3w7prequirements/pipenv-47u56rkx-constraints.txt (line 2))