Package ‘librdmacm-1.1.0’ in /Users/graham/nix-borg/repo/38dca4e3aa6bca43ea96d2fcc04e8229/builder/grahamc-ndnd/pkgs/development/libraries/librdmacm/default.nix:4 is not supported on ‘x86_64-darwin’, refusing to evaluate.

a) For `nixos-rebuild` you can set
  { nixpkgs.config.allowBroken = true; }
in configuration.nix to override this.

b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
  { allowBroken = true; }
to ~/.config/nixpkgs/config.nix.

/usr/convex/getsysinfo =

UNAME_MACHINE = aarch64
UNAME_RELEASE = 4.15.3
UNAME_SYSTEM  = Linux
UNAME_VERSION = #1-NixOS SMP PREEMPT Mon Feb 12 06:07:23 UTC 2018
configure: error: cannot guess build type; you must specify one
builder for '/nix/store/05pjrb6qn4ascd0yaih8bhfhb8b79xag-libibverbs-1.1.8.drv' failed with exit code 1
cannot build derivation '/nix/store/w7ih22qpaxr6nn9lq3jdcw0cymlcsn5q-librdmacm-1.1.0.drv': 1 dependencies couldn't be built
�[31;1merror:�[0m build of '/nix/store/w7ih22qpaxr6nn9lq3jdcw0cymlcsn5q-librdmacm-1.1.0.drv' failed

shrinking /nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0/bin/rstream
shrinking /nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0/bin/riostream
shrinking /nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0/lib/rsocket/librspreload.so.1.0.0
shrinking /nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0/lib/librdmacm.so.1.0.0
gzipping man pages under /nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0/share/man/
strip is /nix/store/b0zlxla7dmy1iwc3g459rjznx59797xy-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0/lib  /nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0/bin 
patching script interpreter paths in /nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0
checking for references to /tmp/nix-build-librdmacm-1.1.0.drv-0 in /nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0...
/nix/store/hwzkcif6mzrqmza14s4qjx2z3nllvih4-librdmacm-1.1.0

Package ‘librdmacm-1.1.0’ in /Users/graham/nix-borg/repo/38dca4e3aa6bca43ea96d2fcc04e8229/builder/grahamc-ndnd/pkgs/development/libraries/librdmacm/default.nix:4 is not supported on ‘x86_64-darwin’, refusing to evaluate.

a) For `nixos-rebuild` you can set
  { nixpkgs.config.allowBroken = true; }
in configuration.nix to override this.

b) For `nix-env`, `nix-build`, `nix-shell` or any other Nix command you can add
  { allowBroken = true; }
to ~/.config/nixpkgs/config.nix.

Checking whether the ENCTYPE_ARCFOUR_HMAC key type definition is available                      : ok 
Checking whether the ENCTYPE_ARCFOUR_HMAC_EXP key type definition is available                  : ok 
Checking whether the WRFILE:-keytab is supported                                                : ok 
Checking for KRB5_DEPRECATED define taking an identifier                                        : ok 
Checking whether krb5_creds have flags property                                                 : not found 
Looking for MIT KDC
Checking for program krb5kdc                                                                    : not found 
/tmp/nix-build-samba-4.7.4.drv-0/samba-4.7.4/wscript:168: error: The program ['krb5kdc'] is required
builder for ‘/nix/store/xw0c8gh3km4shd0w1q2bnfixdbgjjlf9-samba-4.7.4.drv’ failed with exit code 1
error: build of ‘/nix/store/xw0c8gh3km4shd0w1q2bnfixdbgjjlf9-samba-4.7.4.drv’ failed

./util/coding.h:114:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
make: *** [Makefile:1835: db/db_impl_readonly.o] Error 1
make: *** [Makefile:1835: db/db_iter.o] Error 1
make: *** [Makefile:1835: db/db_impl_open.o] Error 1
builder for '/nix/store/68kj37l301pdx9v93c9mlw4bb01g6zyb-rocksdb-5.10.3.drv' failed with exit code 2
cannot build derivation '/nix/store/85rsqhy6giq6zwx238466vdbzfqs3j9r-ceph-12.2.2.drv': 1 dependencies couldn't be built
cannot build derivation '/nix/store/krkfayk08xgf9w8bsbb4hcaarhg99n5g-samba-4.7.4.drv': 3 dependencies couldn't be built
�[31;1merror:�[0m build of '/nix/store/krkfayk08xgf9w8bsbb4hcaarhg99n5g-samba-4.7.4.drv', '/nix/store/w7ih22qpaxr6nn9lq3jdcw0cymlcsn5q-librdmacm-1.1.0.drv' failed