I'm working on making the FastUpToDate check in Vs work for the Terminal project. This is one of a few PRs in this area.
FastUpToDate lets vs check quickly determine that it doesn't need to do anything for a given project.
However, a few of our projects don't produce all the right artifacts, or check too many things, and this eventually causes the `wapproj` to rebuild, EVERY TIME YOU F5 in VS.
This first PR deals with the `.copycomplete` file in `obj\x64\debug\terminalconnection\`. Below are my verbatim notes, which led to the solution in this PR.
### Problem 1 ✅
* There were missing `.copycomplete` files across the repo.
```
obj\x64\debug\microsoft.terminal.settings.model.lib\microsoft.terminal.settings.modellib.vcxproj.copycomplete
obj\x64\debug\microsoft.terminal.settings.model\microsoft.terminal.settings.model.vcxproj.copycomplete
obj\x64\debug\terminalapplib\terminalapplib.vcxproj.copycomplete
obj\x64\debug\terminalapp\terminalapp.vcxproj.copycomplete
obj\x64\debug\terminalconnection\terminalconnection.vcxproj.copycomplete
```
- just making empty files there seemed good enough.
- Might be because the CopyLocal target was already there, but the task didn't ever run to create that file? Weird.
* UPDATE: checking out main, and building again - the `.copycomplete`s are gone. So that's something that can be improved.
* The only place I could find a reference was in `"obj\x64\Debug\TerminalConnection\TerminalConnection.vcxproj.FileListAbsolute.txt"`, which will get updated if you remove the line from that file (but no one seemingly writes it or mentiones it in the log)
* Deleting `bin\x64\Debug\TerminalConnection\cpprest142_2_10d.dll` then building the project did copy the file, but it didn't touch the copycomplete. Weird.
* Why does
- `TerminalConnection` think it needs this
- `Microsoft.Terminal.Settings.Model.Lib` have one
- `Microsoft.Terminal.Control*` **NOT** have one
* This file is a [`@(CopyUpToDateMarker)`](https://github.com/dotnet/msbuild/blob/main/src/Tasks/Microsoft.Common.CurrentVersion.targets#L392)
* The target [`_CopyFilesMarkedCopyLocal`](https://github.com/dotnet/msbuild/blob/main/src/Tasks/Microsoft.Common.CurrentVersion.targets#L4795) touches `@(CopyUpToDateMarker)`, when:
- `"'@(ReferencesCopiedInThisBuild)' != ''` and
- `'$(WroteAtLeastOneFile)' == 'true'"`
* In out build output:
```
6>Target _CopyFilesMarkedCopyLocal:
6> Using "Copy" task from assembly "Microsoft.Build.Tasks.Core, Version=15.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a".
6> Task "Copy"
6> Did not copy from file "C:\Users\migrie\dev\public\terminal\bin\x64\Debug\TerminalConnection\cpprest142_2_10d.dll" to file "C:\Users\migrie\dev\public\terminal\bin\x64\Debug\TerminalConnection\cpprest142_2_10d.dll" because the "SkipUnchangedFiles" parameter was set to "true" in the project and the files' sizes and timestamps match.
6> Done executing task "Copy".
6> Task "Touch" skipped, due to false condition; ('@(ReferencesCopiedInThisBuild)' != '' and '$(WroteAtLeastOneFile)' == 'true') was evaluated as ('C:\Users\migrie\dev\public\terminal\bin\x64\Debug\TerminalConnection\cpprest142_2_10d.dll' != '' and 'False' == 'true').
```
- So `WroteAtLeastOneFile` should be true, when it's currently false. That _looks_ like it's set to true when the file does get copied, wheich did't happen because the copy was skipped.
- WAIT LOOK AT THAT MESSAGE. "Did not copy from file "
`"C:\Users\migrie\dev\public\terminal\bin\x64\Debug\TerminalConnection\cpprest142_2_10d.dll"` to file
`"C:\Users\migrie\dev\public\terminal\bin\x64\Debug\TerminalConnection\cpprest142_2_10d.dll"`
THESE ARE THE SAME FILE.
`@(ReferenceCopyLocalPaths)` is filled with the file already?!
- The Target `AppLocalFromInstalled` is the only other thing that references `cpprest142_2_10d.dll`.
- Even if you delete the `cpprest142_2_10d.dll`, then `_CopyFilesMarkedCopyLocal` still evaluates the Touch condition as false, and doesn't touch it.
- the `deployBinary()` function in `packages\vcpkg-cpprestsdk.2.10.14\scripts\buildsystems\msbuild\applocal.ps1` does the actual job of copying the file. It copies it outside of MsBuild, which prevents MsBuild from copying it, and now MsBuild thinks it shouldn't write the `.copycomplete` file itself.
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