Fix bashrc regression
Fix bashrc regression

Interactive non-login shells should not source /etc/profile, otherwise
environment variables set by the user will get clobbered.  For
example:

  $ export PERL5LIB=/foo
  $ bash
  $ echo $PERL5LIB
  /home/eelco/.nix-profile/lib/perl5/site_perl:/nix/var/nix/profiles/default/lib/perl5/site_perl:/run/current-system/sw/lib/perl5/site_perl:/home/eelco/.nix-profile/lib/perl5/site_perl:/nix/var/nix/profiles/default/lib/perl5/site_perl:/run/current-system/sw/lib/perl5/site_perl

SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,andreassalomonsson/nixos,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,triton/triton,SymbiFlow/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,triton/triton,SymbiFlow/nixpkgs,andreassalomonsson/nixos,NixOS/nixpkgs,andreassalomonsson/nixos,andreassalomonsson/nixos,SymbiFlow/nixpkgs,NixOS/nixpkgs,triton/triton,NixOS/nixos,SymbiFlow/nixpkgs,andreassalomonsson/nixos,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixos,triton/triton,triton/triton,SymbiFlow/nixpkgs,NixOS/nixos,triton/triton,NixOS/nixos,SymbiFlow/nixpkgs,triton/triton,SymbiFlow/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,SymbiFlow/nixpkgs,triton/triton,NixOS/nixpkgs,NixOS/nixos,SymbiFlow/nixpkgs,NixOS/nixos,NixOS/nixpkgs,SymbiFlow/nixpkgs,NixOS/nixpkgs,andreassalomonsson/nixos