home-manager switch --verbose
error: while evaluating the attribute 'buildCommand' of the derivation 'home-manager-generation' at /nix/store/0fyk898mfsvwbzxybzg0779crd1qf7lr-nixos-19.09.2370.e10c65cdb35/nixos/pkgs/build-support/trivial-builders.nix:7:14:
while evaluating the attribute 'text' of the derivation 'activation-script' at /nix/store/0fyk898mfsvwbzxybzg0779crd1qf7lr-nixos-19.09.2370.e10c65cdb35/nixos/pkgs/build-support/trivial-builders.nix:7:14:
while evaluating 'mkCmd' at /home/hirschp/.nix-defexpr/channels/home-manager/modules/home-environment.nix:363:17, called from undefined position:
while evaluating the attribute 'data' at /home/hirschp/.nix-defexpr/channels/home-manager/modules/lib/dag.nix:96:41:
while evaluating the attribute 'data' at /home/hirschp/.nix-defexpr/channels/home-manager/modules/lib/dag.nix:89:11:
while evaluating the attribute 'data' at /home/hirschp/.nix-defexpr/channels/home-manager/modules/lib/dag.nix:115:12:
while evaluating the attribute 'passAsFile' of the derivation 'home-manager-path' at /nix/store/0fyk898mfsvwbzxybzg0779crd1qf7lr-nixos-19.09.2370.e10c65cdb35/nixos/pkgs/build-support/trivial-builders.nix:7:14:
while evaluating the attribute 'buildInputs' of the derivation 'libguestfs-1.40.2' at /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/pkgs/stdenv/generic/make-derivation.nix:191:11:
while evaluating the attribute 'buildInputs' of the derivation 'ocaml4.09.1-gettext-0.3.8' at /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/pkgs/development/ocaml-modules/ocaml-gettext/default.nix:4:3:
while evaluating 'getOutput' at /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/lib/attrsets.nix:464:23, called from undefined position:
while evaluating anonymous function at /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/pkgs/stdenv/generic/make-derivation.nix:142:17, called from undefined position:
while evaluating 'callPackageWith' at /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/lib/customisation.nix:117:35, called from /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/pkgs/top-level/ocaml-packages.nix:94:12:
while evaluating 'makeOverridable' at /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/lib/customisation.nix:67:24, called from /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/lib/customisation.nix:121:8:
while evaluating anonymous function at /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/pkgs/development/tools/ocaml/camlp4/default.nix:1:1, called from /nix/store/ri8m7ak0c0wkbzmlfn52ah2h4yj1vwp9-unstable-20.09pre219796.f601ab37c2f/unstable/lib/customisation.nix:69:16:
camlp4 is not available for OCaml 4.09.1