dotnet-installer/.devcontainer/vmr-source-build

This Codespace can help you debug the source build of .NET. In case you have run this from a dotnet/installer PR branch, it will contain the VMR (dotnet/dotnet) checked out into /workspaces/dotnet with the PR changes pulled into it. You can then attempt to source-build the VMR which is what the VMR leg in the installer PR build doing. This build takes about 45 minutes and, after completion, produces an archived .NET SDK located in /workspaces/dotnet/artifacts/x64/Release.

Build the SDK

To build the VMR, run following:

cd /workspaces/dotnet
./build.sh --online

Please note that, at this time, the build modifies some of the checked-in sources so it might be preferential to rebuild the Codespace between attempts (or reset the working tree changes).

For more details, see the instructions at https://github.com/dotnet/dotnet.

Synchronize your changes in locally

When debugging the build, you have two options how to test your changes in this environment.

Making changes to the VMR directly

You can make the changes directly to the local checkout of the VMR at /workspaces/dotnet. You can then try to build the VMR and see if the change works for you.

Pull changes into the Codespace from your fork

You can also make a fix in the individual source repository (e.g. dotnet/runtime) and push the fix into a branch; can be in your fork too. Once you have the commit pushed, you can pull this version of the repository into the Codespace by running:

/workspaces/synchronize-vmr.sh                \
  --repository <repo>:<commit, tag or branch> \
  --remote <repo>:<fork URI>

You can now proceed building the VMR in the Codespace using instructions above. You can repeat this process and sync a new commit from your fork. Only note that, at this time, Source-Build modifies some of the checked-in sources so you'll need to revert the working tree changes between attempts.