Basic linux support

[jayvdb]

Seems like there is a few problems preventing the basics from working. (Note I dont have choco installed yet, so that should be the first error I see)

$ pwsh -c ". assets/fudge/Fudge.ps1 list"
Fudge v$version$
Error checking user administrator priviledges
Windows Principal functionality is not supported on this platform.
Must be running with administrator priviledges for Fudge to fully function

Duration: 00:00:00.4940592
$ pwsh -c ". assets/fudge/Fudge.ps1 pack -fudgefile .ci/Fudgefile.appveyor"
Fudge v$version$
Error checking user administrator priviledges
Windows Principal functionality is not supported on this platform.
Must be running with administrator priviledges for Fudge to fully function

Duration: 00:00:00.2603162

[Badgerati]

Oh yeah, there will be - Admin checking is a big one, as it only works on Windows. Also that Chocolately isn't for nix as well.

This is one that will be resolved via #61 and #53 - For rewriting Fudge as a module, I'm looking at using classes - to make multiple providers easier to support.

[jayvdb]

Also that Chocolately isn't for nix as well.

I have a reasonably working choco with chocolatey/choco#1827

I'm going to hack around the Fudge admin checking and see what else doesnt work. Im especially keen on seeing fudge/choco pack working, as that can be used to create fake empty packages that can be installed on Linux for mock/test/development purposes.

[jayvdb]

List of initial problems:

• Test-Chocolatey invokes choco, but on linux it will be choco.exe which is not executable. I've created a shell script choco to workaround this. Instead, Test-Chocolatey could fall back to looking for mono, and/or invoking something like mono choco.exe. The user then needs to set MONO_PATH appropriately, but this isnt working for me yet.

• Test-AdminUser fails badly with

  Error checking user administrator priviledges
  Windows Principal functionality is not supported on this platform.
  Must be running with administrator priviledges for Fudge to fully function

  Easy workaround is for Test-AdminUser to just return false on linux.

• choco on linux replies with

  Chocolatey v0.10.14-beta-83-g501397c5 Custom unofficial builds are not allowed by default. To override this behavior, explicitly set --allow-unofficial.

  Fudge needs to add that --allow-unofficial , always on Linux, or just always always assuming it doesnt break anything. How silly that it needs a flag to run. That is a solution to a non-problem if I ever saw one.

  One possible workaround is for the user to add -args '--allow-unofficial' when invoking fudge, and then adding -Arguments $Arguments everywhere, as #47: Use cli passed arguments on install/upgrade paths #56 only added it to most of the actions. pack is one with a different Invoke-Chocolatey, so the CLI args need to be passed through to choco pack. choco -v doesnt need '--allow-unofficial'; there might be a few more which dont. Other actions that use Invoke-Chocolatey(Action) and dont pass args from the CLI: Remove-Fudgefile, Restore-Fudgefile, New-Fudgefile, Invoke-FudgePrune, Invoke-FudgeClean. The alternative is for Invoke-Chocolatey to add --allow-unofficial. If it can always be added without side-effects, this is a good option. If it should only be added in some circumstances, then checking those circumstances here could be an annoying overhead.

• action pack should not require admin privileges. Seems this is just an oversight, and needs to be added to the list $isAdminAction = @(... It seems to work ok without admin privs.

• Most of the Write-Notice in Fudge.ps1 should be Write-Fail and should return an exit code