More findings, correct me please, if wrong.
As far as I understood it you give buildxyz the command it wants to run to build any software in the end.
The command can be a build tool (see
cargo in example above) or some build helper, i. e.
node2nix in case of a node library or app.
buildxyz will ask you if missing tools should be injected, which you probably want to answer saying
y as otherwise buildxyz will panic not finding the tool.
When ready buildxyz signals you that it succeeded meaning you may continue i. e. using
nix-build or even running
nix run github:RaitoBezarius/buildxyz -- "legacy build tool" latter which in case you ran the build helper (
Then continue running / using your built software or using the generated derivations for PRs.