It seems like when you try to install PySR inside a custom Julia project, it does not install SymbolicRegression.jl. In other words, it seems to expect that SymbolicRegression.jl is the project you would want to install in.
I think it should check whether SymbolicRegression.jl is already installed, and, if not, it should add it (just like when it installs the @pysr-* projects).
It seems like when you try to install PySR inside a custom Julia project, it does not install SymbolicRegression.jl. In other words, it seems to expect that SymbolicRegression.jl is the project you would want to install in.
I think it should check whether SymbolicRegression.jl is already installed, and, if not, it should add it (just like when it installs the
@pysr-*
projects).