[Nix-dev] haskell-env-ghc-7.8.3 fails to build

[Tom Dimiduk]

I was looking forward to playing with ghc-7.8 when unstable pushed out the
new version this week, but things won't quite build. Any advice on how to
debug this?

nixos-rebuild --upgrade
test
⏎
downloading Nix expressions from `
http://releases.nixos.org/nixos/unstable/nixos-14.10pre46074.4e06537/nixexprs.tar.xz'.
..
  % Total    % Received % Xferd  Average Speed   Time    Time     Time
Current
                                 Dload  Upload   Total   Spent    Left
Speed
100 3738k  100 3738k    0     0   286k      0  0:00:13  0:00:13 --:--:--
553k
unpacking channels...
created 2 symlinks in user environment
building Nix...
building the system configuration...
these derivations will be built:
  /nix/store/14zdm2xf0zxwcpgkipkfyljpak7qw3cd-haskell-env-ghc-7.8.3.drv
  /nix/store/2bqxkycdz6cyn06mfzdr383yj4pzri6m-unit.drv
  /nix/store/61qv9b7pv7fvccc7iifqsm791dx1frfz-system-crontab.drv
  /nix/store/7zrsqigl5l4qssq31hv88s098njkljjy-dbus-conf.drv
  /nix/store/jqr4zl9skbvnsq6sr58b4xq5jkp5azmb-etc.drv

/nix/store/n1z9rzpd3dkc2d0xm08rla3gm5qwyym4-nixos-14.10pre45979.0d23cf8.drv
  /nix/store/snl5xyrgbbddgvpi59hv1733cscx74p8-system-path.drv
  /nix/store/vdngyxaiashq5c531dr9g3znkg6vqw1c-system-units.drv
building path(s)
`/nix/store/k1k6hdjd071il8z6mpl7n00rkrjix5b4-haskell-env-ghc-7.8.3'
building /nix/store/k1k6hdjd071il8z6mpl7n00rkrjix5b4-haskell-env-ghc-7.8.3
collision between
`/nix/store/hb92nfw5iapmrgy7c12h04vhp6yqb85b-ghc-7.8.3/lib/ghc-7.8.3/terminfo-0.4.0.0/
libHSterminfo-0.4.0.0-ghc7.8.3.so' and
`/nix/store/8jq44m6r7nakl2hqfp11pbz93wr2p0gh-haskell-terminfo-ghc7.8.3-0.4.0.0-shared/lib/ghc-7.8.3/terminfo-0.4.0.0/
libHSterminfo-0.4.0.0-ghc7.8.3.so' at /nix/store/
9z6d76pz8rr7gci2n3igh5dqi7ac5xqj-builder.pl line 72.
note: keeping build directory `/tmp/nix-build-haskell-env-ghc-7.8.3.drv-7'
builder for
`/nix/store/14zdm2xf0zxwcpgkipkfyljpak7qw3cd-haskell-env-ghc-7.8.3.drv'
failed with exit code 2
cannot build derivation
`/nix/store/snl5xyrgbbddgvpi59hv1733cscx74p8-system-path.drv': 1
dependencies couldn't be built
cannot build derivation
`/nix/store/61qv9b7pv7fvccc7iifqsm791dx1frfz-system-crontab.drv': 1
dependencies couldn't be built
cannot build derivation
`/nix/store/7zrsqigl5l4qssq31hv88s098njkljjy-dbus-conf.drv': 1 dependencies
couldn't be built
cannot build derivation
`/nix/store/2bqxkycdz6cyn06mfzdr383yj4pzri6m-unit.drv': 1 dependencies
couldn't be built
cannot build derivation
`/nix/store/vdngyxaiashq5c531dr9g3znkg6vqw1c-system-units.drv': 1
dependencies couldn't be built
cannot build derivation
`/nix/store/jqr4zl9skbvnsq6sr58b4xq5jkp5azmb-etc.drv': 3 dependencies
couldn't be built
cannot build derivation
`/nix/store/n1z9rzpd3dkc2d0xm08rla3gm5qwyym4-nixos-14.10pre45979.0d23cf8.drv':
2 dependencies couldn't be built
error: build of
`/nix/store/n1z9rzpd3dkc2d0xm08rla3gm5qwyym4-nixos-14.10pre45979.0d23cf8.drv'
failed

Thanks,
Tom
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