Leksah在NixOS 14.12 - 无法安装，为什么？

Question

Leksah在NixOS 14.12 - 不稳定的频道无法安装，为什么？

[demo@nixos:~]$ nix-channel --list 
nixpkgs http://nixos.org/channels/nixpkgs-unstable 

[demo@nixos:~]$ nix-env -i leksah 
installing ‘leksah’ 
these derivations will be built: 
    /nix/store/69k8c7mvz64k08z9gabh7gmcn1i265rn-haskell-regex-tdfa-text-1.0.0.2.drv 
    /nix/store/h9dxxnab1sngr2d6g1q9qj0yv35iqyzs-haskell-leksah-0.15.0.1.drv 
    /nix/store/lfjh66d015dkh9kr51h5871c7gqji5na-ghc-7.10.1.drv 
    /nix/store/pdpsxp33mffmq72vhk5ig8bhrrdyq7p2-leksah.drv 
building path(s) ‘/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2’ 
setupCompilerEnvironmentPhase 
Build with /nix/store/bc84hdk730zcdm1c9s5yf2ahpvm51lzp-ghc-7.10.1. 
unpacking sources 
unpacking source archive /nix/store/cmrcmadl401k7sjgqwj2dz4b9jqwxnck-regex-tdfa-text-1.0.0.2.tar.gz 
source root is regex-tdfa-text-1.0.0.2 
patching sources 
compileBuildDriverPhase 
setupCompileFlags: -package-db=/tmp/nix-build-haskell-regex-tdfa-text-1.0.0.2.drv-0/package.conf.d -j1 -threaded 
[1 of 1] Compiling Main    (Setup.lhs, /tmp/nix-build-haskell-regex-tdfa-text-1.0.0.2.drv-0/Main.o) 
Linking Setup ... 
configuring 
configureFlags: --verbose --prefix=/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2 --libdir=$prefix/lib/$compiler --libsubdir=$pkgid --with-gcc=gcc --package-db=/tmp/nix-build-haskell-regex-tdfa-text-1.0.0.2.drv-0/package.conf.d --ghc-option=-optl=-Wl,-rpath=/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2/lib/ghc-7.10.1/regex-tdfa-text-1.0.0.2 --ghc-option=-j1 --enable-split-objs --disable-library-profiling --enable-shared --enable-library-vanilla --enable-executable-dynamic --enable-tests 
Configuring regex-tdfa-text-1.0.0.2... 
Dependency array -any: using array-0.5.1.0 
Dependency base >=3 && <5: using base-4.8.0.0 
Dependency regex-base -any: using regex-base-0.93.2 
Dependency regex-tdfa >=1.1.1: using regex-tdfa-1.2.0 
Dependency text -any: using text-1.2.1.1 
Using Cabal-1.22.2.0 compiled by ghc-7.10 
Using compiler: ghc-7.10.1 
Using install prefix: 
/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2 
Binaries installed in: 
/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2/bin 
Libraries installed in: 
/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2/lib/ghc-7.10.1/regex-tdfa-text-1.0.0.2 
Private binaries installed in: 
/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2/libexec 
Data files installed in: 
/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2/share/x86_64-linux-ghc-7.10.1/regex-tdfa-text-1.0.0.2 
Documentation installed in: 
/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2/share/doc/x86_64-linux-ghc-7.10.1/regex-tdfa-text-1.0.0.2 
Configuration files installed in: 
/nix/store/53kxzd2apkijwib78gw4mdlpxs5vllpj-haskell-regex-tdfa-text-1.0.0.2/etc 
No alex found 
Using ar found on system at: 
/nix/store/yxg5zsjxp1l16xk7r23rayyc18fkxynk-binutils-2.23.1/bin/ar 
No c2hs found 
No cpphs found 
Using gcc version 4.8.4 given by user at: 
/nix/store/ylj1q31a7x3pvcraxk60dyv9y4wmwcrc-gcc-wrapper-4.8.4/bin/gcc 
Using ghc version 7.10.1 found on system at: 
/nix/store/bc84hdk730zcdm1c9s5yf2ahpvm51lzp-ghc-7.10.1/bin/ghc 
Using ghc-pkg version 7.10.1 found on system at: 
/nix/store/bc84hdk730zcdm1c9s5yf2ahpvm51lzp-ghc-7.10.1/bin/ghc-pkg 
No ghcjs found 
No ghcjs-pkg found 
No greencard found 
Using haddock version 2.16.0 found on system at: 
/nix/store/bc84hdk730zcdm1c9s5yf2ahpvm51lzp-ghc-7.10.1/bin/haddock 
No happy found 
Using haskell-suite found on system at: haskell-suite-dummy-location 
Using haskell-suite-pkg found on system at: haskell-suite-pkg-dummy-location 
No hmake found 
Using hpc version 0.67 found on system at: 
/nix/store/bc84hdk730zcdm1c9s5yf2ahpvm51lzp-ghc-7.10.1/bin/hpc 
Using hsc2hs version 0.67 found on system at: 
/nix/store/bc84hdk730zcdm1c9s5yf2ahpvm51lzp-ghc-7.10.1/bin/hsc2hs 
Using hscolour version 1.22 found on system at: 
/nix/store/g6mfdhbmwm0499n88bnzd32y96gmnfn9-hscolour-1.23/bin/HsColour 
No jhc found 
Using ld found on system at: 
/nix/store/ylj1q31a7x3pvcraxk60dyv9y4wmwcrc-gcc-wrapper-4.8.4/bin/ld 
No lhc found 
No lhc-pkg found 
No pkg-config found 
Using strip version 2.23 found on system at: 
/nix/store/yxg5zsjxp1l16xk7r23rayyc18fkxynk-binutils-2.23.1/bin/strip 
Using tar found on system at: 
/nix/store/blyc5sprbm85ph2fmksyhrqislp9j0im-gnutar-1.28/bin/tar 
No uhc found 
building 
Building regex-tdfa-text-1.0.0.2... 
Preprocessing library regex-tdfa-text-1.0.0.2... 
[1 of 2] Compiling Text.Regex.TDFA.Text.Lazy (Text/Regex/TDFA/Text/Lazy.hs, dist/build/Text/Regex/TDFA/Text/Lazy.o) 

Text/Regex/TDFA/Text/Lazy.hs:77:9: 
    Non type-variable argument 
     in the constraint: Data.Array.Base.IArray a (Int, Int) 
    (Use FlexibleContexts to permit this) 
    When checking that ‘go’ has the inferred type 
     go :: forall t (a :: * -> * -> *) i. 
      (Functor (a i), Num i, GHC.Arr.Ix i, 
      Data.Array.Base.IArray a (Int, Int), Extract t) => 
      Int -> t -> [a i (Int, Int)] -> [a i (t, (Int, Int))] 
    In the expression: 
     let 
     go i _ _ | i `seq` False = undefined 
     go _i _t [] = [] 
     go i t (x : xs) 
      = let ... in fmap trans x : seq t' (go (off0 + len0) t' xs) 
     in go 0 source (matchAll regex source) 
    In an equation for ‘matchAllText’: 
     matchAllText regex source 
      = let 
       go i _ _ | i `seq` False = undefined 
       go _i _t [] = ... 
       go i t (x : xs) = ... 
      in go 0 source (matchAll regex source) 
builder for ‘/nix/store/69k8c7mvz64k08z9gabh7gmcn1i265rn-haskell-regex-tdfa-text-1.0.0.2.drv’ failed with exit code 1 
cannot build derivation ‘/nix/store/lfjh66d015dkh9kr51h5871c7gqji5na-ghc-7.10.1.drv’: 1 dependencies couldn't be built 
cannot build derivation ‘/nix/store/pdpsxp33mffmq72vhk5ig8bhrrdyq7p2-leksah.drv’: 1 dependencies couldn't be built 
error: build of ‘/nix/store/pdpsxp33mffmq72vhk5ig8bhrrdyq7p2-leksah.drv’ failed 

Answer 1

电流Leksah版本在Nixpkgs master分支编译成功，即在http://hydra.cryp.to/build/1410084。 unstable频道很快就会有这些更新。关于如何在NixOS上成功运行Leksah还有一些问题需要解决：https://github.com/NixOS/nixpkgs/pull/10351有更多细节。