Package ‘rdma-core-17’ in /Users/graham/nix-borg/repo/38dca4e3aa6bca43ea96d2fcc04e8229/builder/grahamc-ndnd/pkgs/os-specific/linux/rdma-core/default.nix:33 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.

patching script interpreter paths in /nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17
/nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17/bin/rxe_cfg: interpreter directive changed from "/usr/bin/perl" to "/nix/store/s029gmjpgvm776wfb56naqny9qja9339-perl-5.24.3/bin/perl"
/nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17/sbin/srp_daemon.sh: interpreter directive changed from "/bin/bash" to "/nix/store/zqh3l3lyw32q1ayb15bnvg9f24j5v2p0-bash-4.4-p12/bin/bash"
/nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17/libexec/srp_daemon/start_on_all_ports: interpreter directive changed from "/bin/bash" to "/nix/store/zqh3l3lyw32q1ayb15bnvg9f24j5v2p0-bash-4.4-p12/bin/bash"
/nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17/libexec/truescale-serdes.cmds: interpreter directive changed from "/bin/bash" to "/nix/store/zqh3l3lyw32q1ayb15bnvg9f24j5v2p0-bash-4.4-p12/bin/bash"
/nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17/etc/init.d/srpd: interpreter directive changed from "/bin/bash" to "/nix/store/zqh3l3lyw32q1ayb15bnvg9f24j5v2p0-bash-4.4-p12/bin/bash"
/nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17/etc/init.d/ibacm: interpreter directive changed from "/bin/bash" to "/nix/store/zqh3l3lyw32q1ayb15bnvg9f24j5v2p0-bash-4.4-p12/bin/bash"
/nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17/etc/init.d/iwpmd: interpreter directive changed from "/bin/bash" to "/nix/store/zqh3l3lyw32q1ayb15bnvg9f24j5v2p0-bash-4.4-p12/bin/bash"
checking for references to /tmp/nix-build-rdma-core-17.drv-0 in /nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17...
moving /nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17/sbin/* to /nix/store/p4ld4ccxx1kj5b8nx3w34ipyy13g1pqh-rdma-core-17/bin

these paths will be fetched (2.57 MiB download, 7.45 MiB unpacked):
  /nix/store/87gr619a8h4rgrncnq2fv4vy4jmyc5n0-openmpi-3.0.0
copying path '/nix/store/87gr619a8h4rgrncnq2fv4vy4jmyc5n0-openmpi-3.0.0' from 'https://cache.nixos.org'...
/nix/store/87gr619a8h4rgrncnq2fv4vy4jmyc5n0-openmpi-3.0.0

shrinking /nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0/lib/libmpi_mpifh.so.40.0.0
shrinking /nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0/lib/libmpi_usempif08.so.40.0.0
shrinking /nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0/lib/libompitrace.so.40.0.0
shrinking /nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0/lib/liboshmem.so.40.0.0
gzipping man pages under /nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0/share/man/
strip is /nix/store/b0zlxla7dmy1iwc3g459rjznx59797xy-binutils-2.28.1/bin/strip
stripping (with command strip and flags -S) in /nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0/lib  /nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0/bin 
patching script interpreter paths in /nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0
checking for references to /tmp/nix-build-openmpi-3.0.0.drv-0 in /nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0...
/nix/store/ri8wah3v6db39m4fp5rs8zz7rrj0q62z-openmpi-3.0.0

these paths will be fetched (0.77 MiB download, 2.81 MiB unpacked):
  /nix/store/sapfqf2bifh4dvw86fcja335sblcpfsv-net-tools-1.60_p20170221182432
  /nix/store/wnnjn8whqf8yyfy0p2rfspb48xl02zrr-ethtool-4.15
  /nix/store/y31wph1f48cd9dglqz7v7r8bajl3nn9g-rdma-core-17
copying path '/nix/store/wnnjn8whqf8yyfy0p2rfspb48xl02zrr-ethtool-4.15' from 'https://cache.nixos.org'...
copying path '/nix/store/sapfqf2bifh4dvw86fcja335sblcpfsv-net-tools-1.60_p20170221182432' from 'https://cache.nixos.org'...
copying path '/nix/store/y31wph1f48cd9dglqz7v7r8bajl3nn9g-rdma-core-17' from 'https://cache.nixos.org'...
/nix/store/y31wph1f48cd9dglqz7v7r8bajl3nn9g-rdma-core-17

  CC       arch.lo
  CCLD     libopalutil.la
ar: `u' modifier ignored since `D' is the default (see `U')
make[3]: Leaving directory '/build/openmpi-3.0.0/opal/util'
make[2]: Leaving directory '/build/openmpi-3.0.0/opal/util'
Making all in mca/base
make[2]: Entering directory '/build/openmpi-3.0.0/opal/mca/base'
  CC       mca_base_close.lo
building of '/nix/store/xjzyp54mh90gi7fplh0zsdlcgbwrg6nb-openmpi-3.0.0.drv' timed out after 3600 seconds
�[31;1merror:�[0m build of '/nix/store/xjzyp54mh90gi7fplh0zsdlcgbwrg6nb-openmpi-3.0.0.drv' failed