RollForward strategy for CLI tool

[sergey-tihon]

attempt to fix #4088

[Dolfik1]

It looks like there is problem on CI. @forki could you check it?

[Dolfik1]

@forki Paket 6.2.0

dotnet paket restore
It's invalid to use both `rollForward` and one of `rollForwardOnNoCandidateFx` or `applyPatches` in the same runtime config.
Invalid runtimeconfig.json [/Users/nikolay/.nuget/packages/paket/6.2.0/tools/netcoreapp2.1/any/paket.runtimeconfig.json] [/Users/nikolay/.nuget/packages/paket/6.2.0/tools/netcoreapp2.1/any/paket.runtimeconfig.dev.json]

[forki]

I tried this in Paket 6.2.0. But then we get

It's invalid to use both rollForward and one of rollForwardOnNoCandidateFx or applyPatches in the same runtime config.

Any ideas?

[vshapenko]

I do think, this link maybe useful : https://github.com/dotnet/runtime/blob/main/docs/design/features/framework-version-resolution.md @forki

[vshapenko]

@forki , looks similar to following:
To reconcile the various scopes the host will apply the following precedence:

environment variable DOTNET_ROLL_FORWARD_ON_NO_CANDIDATE_FX
.runtimeconfig.json global setting - rollForward and rollForwardOnNoCandidateFx (it's invalid to specify both)
.runtimeconfig.json per-framework setting - rollForward and rollForwardOnNoCandidateFx (it's invalid to specify both)
environment variable DOTNET_ROLL_FORWARD
command line arguments - rollForward and rollForwardOnNoCandidateFx (it's invalid to specify both)

[sergey-tihon]

Looks like <RollForward> conflicts with

Paket/src/Paket/runtimeconfig.template.json

Line 4 in b2feccc

"rollForwardOnNoCandidateFx": 2

[forki]

can someone please send another PR?