metadata-generation-failed install error Mac M1

[chipmcdonald]

M1 mini
I'm getting as far as pip install -U so-vits-svc-fork

stops with

Installing backend dependencies ... done
Preparing metadata (pyproject.toml) ... error
error: subprocess-exited-with-error

× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1

../../meson.build:63:0: ERROR: Unknown compiler(s): [['gfortran'], ['flang'], ['nvfortran'], ['pgfortran'], ['ifort'], ['ifx'], ['g95']]
The following exception(s) were encountered:
Running gfortran --version gave "[Errno 2] No such file or directory: 'gfortran'"
Running gfortran -V gave "[Errno 2] No such file or directory: 'gfortran'"
Running flang --version gave "[Errno 2] No such file or directory: 'flang'"
Running flang -V gave "[Errno 2] No such file or directory: 'flang'"
Running nvfortran --version gave "[Errno 2] No such file or directory: 'nvfortran'"
Running nvfortran -V gave "[Errno 2] No such file or directory: 'nvfortran'"
Running pgfortran --version gave "[Errno 2] No such file or directory: 'pgfortran'"
Running pgfortran -V gave "[Errno 2] No such file or directory: 'pgfortran'"
Running ifort --version gave "[Errno 2] No such file or directory: 'ifort'"
Running ifort -V gave "[Errno 2] No such file or directory: 'ifort'"
Running ifx --version gave "[Errno 2] No such file or directory: 'ifx'"
Running ifx -V gave "[Errno 2] No such file or directory: 'ifx'"
Running g95 --version gave "[Errno 2] No such file or directory: 'g95'"
Running g95 -V gave "[Errno 2] No such file or directory: 'g95'"

   Fortran compiler?  Unfortunately, my dilettante knowledge stops there as well.   Is this not possible with a Mac/m1?  
   
   /dammit Jim, I'm a musician, not a programmer