macOS Hadrian build (configure) won't find nm

[ggreif]

Invoking like this:

hadrian/build.sh -j4 --flavour=quickest --build-root=_mybuild -c

The log in #22 shows a similar error:

Linking /Users/ggreif/ghc/hadrian/dist-newstyle/build/x86_64-osx/ghc-8.6.5/hadrian-0.1.0.0/x/hadrian/build/hadrian/hadrian ...
| Running boot...
| Run Configure ".": hadrian/cfg/system.config.in (and 3 more) => hadrian/cfg/system.config (and 3 more)
xcode-select: note: no developer tools were found at '/Applications/Xcode.app', requesting install. Choose an option in the dialog to download the command line developer tools.
error: nm: invalid argument --
Usage: nm [-agnopruUmxjlfAP[s segname sectname] [-] [-t format] [[-arch <arch_flag>] ...] [file ...]

Here the "Install Xcode" dialog pops up.

In my setup all tools reside in the /nix/store, and I have no developer tools installed.

Interestingly, the build continues. Somewhat into the process the same dialog pops up because of objdump.

[alpmestan]

Any chance you could figure out what derivation you need to have in scope for nm to be available? We could add it to the env when on darwin.