[Nix-dev] Evaluation errors in Nixpkgs

[Peter Simons]

Hi,

I have problems building several packages because of evaluation errors:

  $ nix-build -K ~/.nix-defexpr -iA apacheAnt --show-trace
  error: while evaluating the builtin function `derivationStrict':
  while instantiating the derivation named `cmucl-binary-20b' at `/home/simons/.nix-defexpr/pkgs/development/compilers/cmucl/binary.nix:26:3':
  while evaluating the derivation attribute `buildCommand' at `/home/simons/.nix-defexpr/pkgs/development/compilers/cmucl/binary.nix:28:3':
  while evaluating the builtin function `throw':
  user-thrown exception: Unsupported platform for cmucl.

After removing cumucl_binary, I tried again:

  $ nix-build -K ~/.nix-defexpr -iA apacheAnt --show-trace
  error: while evaluating the builtin function `derivationStrict':
  while instantiating the derivation named `jclasslib-2.0' at `/home/simons/.nix-defexpr/pkgs/development/tools/java/jclasslib/default.nix:4:3':
  while evaluating the derivation attribute `buildNativeInputs' at `/home/simons/.nix-defexpr/pkgs/stdenv/generic/default.nix:73:15':
  while evaluating the builtin function `derivationStrict':
  while evaluating the derivation attribute `name' at `/home/simons/.nix-defexpr/pkgs/development/tools/build-managers/apache-ant/default.nix:6:7':
  assertion failed at `/home/simons/.nix-defexpr/pkgs/top-level/all-packages.nix:2237:5'

Does anyone know what these errors mean, or rather, how they can be
remedied?

Take care,
Peter