flutter pub get error after nullsafety arrival

[hawkbee1]

Because every version of flutter_driver from sdk depends on process 4.0.0-nullsafety.2 and screenshots 2.1.1 depends on process ^3.0.9, flutter_driver from sdk is incompatible with screenshots 2.1.1.
And because no versions of screenshots match >2.1.1 <3.0.0, flutter_driver from sdk is incompatible with screenshots ^2.1.1.
So, because bluevsred depends on both screenshots ^2.1.1 and flutter_driver any from sdk, version solving failed.
pub get failed (1; So, because bluevsred depends on both screenshots ^2.1.1 and flutter_driver any from sdk, version solving failed.)

[hawkbee1]

/home/hawkbee/snap/flutter/common/flutter/bin/flutter --no-color pub outdated
Dependencies Current Upgradable Resolvable Latest
cloud_firestore *0.14.0+2 - - 0.14.3
cupertino_icons *1.0.0 - - 1.0.1
firebase_analytics *6.0.0 - - 6.2.0
firebase_auth *0.18.0+1 - - 0.18.3
firebase_core *0.5.0 - - 0.5.2
get_it *4.0.4 - - 5.0.1
mobx *1.2.1+2 - - 1.2.1+4
url_launcher *5.7.2 - - 5.7.10

dev_dependencies
mobx_codegen *1.1.0+1 - - 1.1.2
test *1.15.2 - - 1.15.4

transitive dependencies
cloud_firestore_platform_interface *2.0.1 - - 2.2.0
cloud_firestore_web *0.2.0+1 - - 0.2.1
firebase *7.3.0 - - 7.3.2
firebase_auth_platform_interface *2.0.1 - - 2.1.3
firebase_auth_web *0.3.0+1 - - 0.3.2
firebase_core_web *0.2.0 - - 0.2.1
matcher *0.12.8 - - 0.12.9
meta *1.1.8 - - 1.2.3
pedantic *1.9.0 - - 1.9.2
plugin_platform_interface *1.0.2 - - 1.0.3
quiver *2.1.3 - - 2.1.5
stack_trace *1.9.5 - - 1.9.6
url_launcher_linux *0.0.1+1 - - 0.0.1+4
url_launcher_macos *0.0.1+8 - - 0.0.1+9
url_launcher_platform_interface *1.0.8 - - 1.0.9
url_launcher_web *0.1.4+1 - - 0.1.5+1
url_launcher_windows *0.0.1+1 - - 0.0.1+3

transitive dev_dependencies
_fe_analyzer_shared *7.0.0 - - 12.0.0
analyzer *0.39.17 - - 0.40.6
build *1.3.0 - - 1.5.0
build_resolvers *1.3.11 - - 1.4.3
dart_style *1.3.6 - - 1.3.9
html *0.14.0+3 - - 0.14.0+4
json_rpc_2 *2.2.1 - - 2.2.2
node_interop *1.1.1 - - 1.2.0
source_gen *0.9.7+1 - - 0.9.8
test_api *0.2.17 - - 0.2.18
test_core *0.3.10 - - 0.3.11+1
vm_service *4.2.0 - - 5.5.0
vm_service_client *0.2.6+2 - - 0.2.6+3
webkit_inspection_protocol *0.7.3 - - 0.7.4

Dependencies are all constrained to the latest resolvable versions.
Newer versions, while available, are not mutually compatible.

[hawkbee1]

After manually updating all package version :
Because every version of flutter_test from sdk depends on test_api 0.2.19-nullsafety.2 and test >=1.15.3 <1.16.0-nullsafety depends on test_api 0.2.18, flutter_test from sdk is incompatible with test >=1.15.3 <1.16.0-nullsafety.
So, because bluevsred depends on both test 1.15.4 and flutter_test any from sdk, version solving failed.
pub get failed (1; So, because bluevsred depends on both test 1.15.4 and flutter_test any from sdk, version solving failed.)

[hawkbee1]

hawkbee@hawkbee-Strix-GL703GM-GL703GM:~/Documents/flutter/bluevsred$ flutter channel
Flutter channels:
master
dev

• beta
  stable

[hawkbee1]

Time to install fvm !
https://pub.dev/packages/fvm

... That was fast and easy to install

[hawkbee1]

switching to channel stable doesn't solve the issue

[hawkbee1]

with

dev_dependencies:
  screenshots: any
  flutter_driver:
    sdk: flutter
  test: any
  json_serializable: ^3.3.0
  mobx_codegen: ^1.1.2
  flutter_test:
    sdk: flutter

I obtain

`Dependencies                Current                Upgradable             Resolvable             Latest                
cupertino_icons             *1.0.0                 *1.0.0                 *1.0.0                 1.0.1                 

dev_dependencies           
screenshots                 *0.2.1                 *0.2.1                 *0.2.1                 2.1.1                 
test                        *1.16.0-nullsafety.5   *1.16.0-nullsafety.5   *1.16.0-nullsafety.5   1.16.0-nullsafety.9   

transitive dependencies    
async                       *2.5.0-nullsafety.1    *2.5.0-nullsafety.1    *2.5.0-nullsafety.1    2.5.0-nullsafety.3    
characters                  *1.1.0-nullsafety.3    *1.1.0-nullsafety.3    *1.1.0-nullsafety.3    1.1.0-nullsafety.5    
charcode                    *1.2.0-nullsafety.1    *1.2.0-nullsafety.1    *1.2.0-nullsafety.1    1.2.0-nullsafety.3    
collection                  *1.15.0-nullsafety.3   *1.15.0-nullsafety.3   *1.15.0-nullsafety.3   1.15.0-nullsafety.5   
firebase                    *7.3.0                 7.3.2                  7.3.2                  7.3.2                 
js                          *0.6.3-nullsafety.1    *0.6.3-nullsafety.1    *0.6.3-nullsafety.1    0.6.3-nullsafety.3    
matcher                     *0.12.10-nullsafety.1  *0.12.10-nullsafety.1  *0.12.10-nullsafety.1  0.12.10-nullsafety.3  
meta                        *1.3.0-nullsafety.4    *1.3.0-nullsafety.4    *1.3.0-nullsafety.4    1.3.0-nullsafety.6    
path                        *1.8.0-nullsafety.1    *1.8.0-nullsafety.1    *1.8.0-nullsafety.1    1.8.0-nullsafety.3    
pedantic                    *1.10.0-nullsafety.2   *1.10.0-nullsafety.2   *1.10.0-nullsafety.2   1.10.0-nullsafety.3   
plugin_platform_interface   *1.0.2                 1.0.3                  1.0.3                  1.0.3                 
quiver                      *2.1.3                 2.1.5                  2.1.5                  2.1.5                 
source_span                 *1.8.0-nullsafety.2    *1.8.0-nullsafety.2    *1.8.0-nullsafety.2    1.8.0-nullsafety.4    
stack_trace                 *1.10.0-nullsafety.2   *1.10.0-nullsafety.2   *1.10.0-nullsafety.2   1.10.0-nullsafety.6   
string_scanner              *1.1.0-nullsafety.1    *1.1.0-nullsafety.1    *1.1.0-nullsafety.1    1.1.0-nullsafety.3    
term_glyph                  *1.2.0-nullsafety.1    *1.2.0-nullsafety.1    *1.2.0-nullsafety.1    1.2.0-nullsafety.3    
typed_data                  *1.3.0-nullsafety.3    *1.3.0-nullsafety.3    *1.3.0-nullsafety.3    1.3.0-nullsafety.5    
url_launcher_linux          *0.0.1+1               0.0.1+4                0.0.1+4                0.0.1+4               
url_launcher_macos          *0.0.1+8               0.0.1+9                0.0.1+9                0.0.1+9               
url_launcher_windows        *0.0.1+1               0.0.1+3                0.0.1+3                0.0.1+3               
vector_math                 *2.1.0-nullsafety.3    *2.1.0-nullsafety.3    *2.1.0-nullsafety.3    2.1.0-nullsafety.5    

transitive dev_dependencies
_fe_analyzer_shared         *7.0.0                 12.0.0                 12.0.0                 12.0.0                
analyzer                    *0.39.17               0.40.6                 0.40.6                 0.40.6                
boolean_selector            *2.1.0-nullsafety.1    *2.1.0-nullsafety.1    *2.1.0-nullsafety.1    2.1.0-nullsafety.3    
build                       *1.3.0                 1.5.0                  1.5.0                  1.5.0                 
build_resolvers             *1.3.11                1.4.3                  1.4.3                  1.4.3                 
clock                       *1.1.0-nullsafety.1    *1.1.0-nullsafety.1    *1.1.0-nullsafety.1    1.1.0-nullsafety.3    
dart_style                  *1.3.6                 1.3.9                  1.3.9                  1.3.9                 
fake_async                  *1.2.0-nullsafety.1    *1.2.0-nullsafety.1    *1.2.0-nullsafety.1    1.2.0-nullsafety.3    
file                        *6.0.0-nullsafety.2    *6.0.0-nullsafety.2    *6.0.0-nullsafety.2    6.0.0-nullsafety.4    
html                        *0.14.0+3              -                      -                      0.14.0+4              
node_interop                *1.1.1                 1.2.0                  1.2.0                  1.2.0                 
platform                    *3.0.0-nullsafety.2    *3.0.0-nullsafety.2    *3.0.0-nullsafety.2    3.0.0-nullsafety.4    
pool                        *1.5.0-nullsafety.2    *1.5.0-nullsafety.2    *1.5.0-nullsafety.2    1.5.0-nullsafety.3    
process                     *4.0.0-nullsafety.2    *4.0.0-nullsafety.2    *4.0.0-nullsafety.2    4.0.0-nullsafety.4    
source_gen                  *0.9.7+1               0.9.8                  0.9.8                  0.9.8                 
source_map_stack_trace      *2.1.0-nullsafety.3    *2.1.0-nullsafety.3    *2.1.0-nullsafety.3    2.1.0-nullsafety.4    
source_maps                 *0.10.10-nullsafety.2  *0.10.10-nullsafety.2  *0.10.10-nullsafety.2  0.10.10-nullsafety.3  
stream_channel              *2.1.0-nullsafety.1    *2.1.0-nullsafety.1    *2.1.0-nullsafety.1    2.1.0-nullsafety.3    
test_api                    *0.2.19-nullsafety.2   *0.2.19-nullsafety.2   *0.2.19-nullsafety.2   0.2.19-nullsafety.6   
test_core                   *0.3.12-nullsafety.5   *0.3.12-nullsafety.5   *0.3.12-nullsafety.5   0.3.12-nullsafety.9   
vm_service                  *4.2.0                 5.5.0                  5.5.0                  5.5.0                 
vm_service_client           *0.2.6+2               *0.2.6+2               *0.2.6+2               0.2.6+3               
webkit_inspection_protocol  *0.7.3                 0.7.4                  0.7.4                  0.7.4                 

15 upgradable dependencies are locked (in pubspec.lock) to older versions.
To update these dependencies, use `pub upgrade`.

[hawkbee1]

screenshots version is too old with this configuration

[hawkbee1]

Solved issue with use of any as version number for screenshots, flutter_test and test + overriding dependencies to allow last version of screenshots.
overrides solution :
mmcc007/screenshots#215 (comment)
They have a PR waiting for maintainer.
Since it's for testing part of the application I can let the project with overrides for now.