Nix crashes when evaluating attribute sets which look like an invalid derivation

[sir4ur0n]

Describe the bug

Evaluating an attribute set like {name = "foo"; type = "derivation"; drvPath = "";} in the REPL crashes, rather than printing an error and giving back the REPL prompt.

Steps To Reproduce

$ nix repl
Welcome to Nix 2.8.1. Type :? for help.

nix-repl> {name = "foo"; type = "derivation"; drvPath = "";}
nix: src/libutil/util.cc:109: nix::Path nix::canonPath(nix::PathView, bool): Assertion `path != ""' failed.
[1]    921322 IOT instruction (core dumped)  nix repl
$ 

As you can see, the REPL session is killed, and the error message is not user-friendly.

Expected behavior

A user-friendly error like error: expression contains an empty 'drvPath' attribute., or even no error, because there is nothing wrong with this attribute set (until one tries to build it, of course).

nix-env --version output
nix-env (Nix) 2.8.1 but @rapenne-s confirmed it also happens on 2.11.

Additional context

FWIW the REPL behaves as expected when setting outPath = "";:

$ nix repl
Welcome to Nix 2.8.1. Type :? for help.

nix-repl> {name = "foo"; type = "derivation"; outPath = "";}
«derivation ???»

nix-repl>

[roberth]

Nix shouldn't need drvPath if it reads outputs and the output attrs instead. (#6507)
That said, this should already be an easy fix.