release.nix

release.nix

contianers-unicode-syntax.nix follows:

{ mkDerivation, base, base-unicode-symbols, containers, stdenv }:
mkDerivation {
  pname = "containers-unicode-symbols";
  version = "0.3.1.1";
  sha256 = "4655f286a2d116cb5f2b89f472df54df739bf904ac8e932b2fd34d3f713e9b31";
  libraryHaskellDepends = [ base base-unicode-symbols containers ];
  jailbreak = true;
  doCheck = false;
  homepage = "http://haskell.org/haskellwiki/Unicode-symbols";
  description = "Unicode alternatives for common functions and operators";
  license = stdenv.lib.licenses.bsd3;
}

release2.nix follows:

let
  config = {
    packageOverrides = pkgs: rec {
      haskellPackages = pkgs.haskellPackages.override {
        overrides = haskellPackagesNew: haskellPackagesOld: rec {
          containers-unicode-symbols =
            haskellPackagesNew.callPackage ./containers-unicode-symbols.nix { };
          project0 =
            haskellPackagesNew.callPackage ./default.nix { };

        };
      };
    };
  };

  pkgs = import <nixpkgs> { inherit config; };

in
  {
    containers-unicode-symbols = pkgs.haskellPackages.containers-unicode-symbols;
    project0 = pkgs.haskellPackages.project0;
  }

feedback from the build in the shell follows:

minsky:haskell-katas evan$ nix-shell --attr project0 release2.nix
these derivations will be built:
  /nix/store/hn2mqpqz94nmyjcs4pbvarq4gcxq5vxa-containers-unicode-symbols-0.3.1.1.drv
building '/nix/store/hn2mqpqz94nmyjcs4pbvarq4gcxq5vxa-containers-unicode-symbols-0.3.1.1.drv'...
setupCompilerEnvironmentPhase
Build with /nix/store/a1841jy51gbsqm9jqp7ma1ga89gjvnka-ghc-8.6.3.
unpacking sources
unpacking source archive /nix/store/6av4g7613kdbnw9pd35ipnjw67zwzwa8-containers-unicode-symbols-0.3.1.1.tar.gz
source root is containers-unicode-symbols-0.3.1.1
setting SOURCE_DATE_EPOCH to timestamp 1365544103 of file containers-unicode-symbols-0.3.1.1/containers-unicode-symbols.cabal
patching sources
Run jailbreak-cabal to lift version restrictions on build inputs.
compileBuildDriverPhase
setupCompileFlags: -package-db=/private/var/folders/s6/sjyvttp568s3sj22dgrtk8tm0000gn/T/nix-build-containers-unicode-symbols-0.3.1.1.drv-0/setup-package.conf.d -j4 -threaded
[1 of 1] Compiling Main             ( Setup.hs, /private/var/folders/s6/sjyvttp568s3sj22dgrtk8tm0000gn/T/nix-build-containers-unicode-symbols-0.3.1.1.drv-0/Main.o )
Linking Setup ...
configuring
configureFlags: --verbose --prefix=/nix/store/y026741xlj4ywmqw9wnsvgjswlw7f85i-containers-unicode-symbols-0.3.1.1 --libdir=$prefix/lib/$compiler --libsubdir=$abi/$libname --docdir=/nix/store/iz3naxzn1a7w3kvpwbvqrvr1npkknyfa-containers-unicode-symbols-0.3.1.1-doc/share/doc/containers-unicode-symbols-0.3.1.1 --with-gcc=clang --package-db=/private/var/folders/s6/sjyvttp568s3sj22dgrtk8tm0000gn/T/nix-build-containers-unicode-symbols-0.3.1.1.drv-0/package.conf.d --ghc-option=-j4 --disable-split-objs --enable-library-profiling --profiling-detail=exported-functions --disable-profiling --enable-shared --disable-coverage --enable-static --disable-executable-dynamic --disable-tests --disable-benchmarks --enable-library-vanilla --enable-library-for-ghci --extra-include-dirs=/nix/store/bh0kcvcv4rgjh53r2xi7l0n9x6fhk0ad-libc++-5.0.2/include --extra-lib-dirs=/nix/store/bh0kcvcv4rgjh53r2xi7l0n9x6fhk0ad-libc++-5.0.2/lib --extra-include-dirs=/nix/store/mgbn39mdv4mmzcsd4ix3x8sngvz8a8mm-libc++abi-5.0.2/include --extra-lib-dirs=/nix/store/mgbn39mdv4mmzcsd4ix3x8sngvz8a8mm-libc++abi-5.0.2/lib --extra-include-dirs=/nix/store/ldh9yl3f077l8nh12glnzf5bmzljrz3y-compiler-rt-5.0.2-dev/include --extra-lib-dirs=/nix/store/9y5fwqirqwic6rjj09lk2byw81ppv2j6-compiler-rt-5.0.2/lib --extra-lib-dirs=/nix/store/vv2b0p5cfjinnr6vx6i73958x15syrs3-ncurses-6.1-20181027/lib --extra-lib-dirs=/nix/store/894v1yfgfw67lbzmv4kpbzafsri715d2-libffi-3.2.1/lib --extra-lib-dirs=/nix/store/qdxpdbxd3l2rnr7ma66d4xgdvfrgxqvx-gmp-6.1.2/lib --extra-include-dirs=/nix/store/5lp3h8zfkp6h1h1ypwcjjn75iggk8fj7-libiconv-osx-10.11.6/include --extra-lib-dirs=/nix/store/5lp3h8zfkp6h1h1ypwcjjn75iggk8fj7-libiconv-osx-10.11.6/lib --extra-framework-dirs=/nix/store/dygglfz7pkz8pj12dcna1ii24vmzghrx-swift-corefoundation/Library/Frameworks
Using Parsec parser
Configuring containers-unicode-symbols-0.3.1.1...
CallStack (from HasCallStack):
  die', called at libraries/Cabal/Cabal/Distribution/Simple/Configure.hs:950:20 in Cabal-2.4.0.1:Distribution.Simple.Configure
  configureFinalizedPackage, called at libraries/Cabal/Cabal/Distribution/Simple/Configure.hs:460:12 in Cabal-2.4.0.1:Distribution.Simple.Configure
  configure, called at libraries/Cabal/Cabal/Distribution/Simple.hs:596:20 in Cabal-2.4.0.1:Distribution.Simple
  confHook, called at libraries/Cabal/Cabal/Distribution/Simple/UserHooks.hs:67:5 in Cabal-2.4.0.1:Distribution.Simple.UserHooks
  configureAction, called at libraries/Cabal/Cabal/Distribution/Simple.hs:178:19 in Cabal-2.4.0.1:Distribution.Simple
  defaultMainHelper, called at libraries/Cabal/Cabal/Distribution/Simple.hs:115:27 in Cabal-2.4.0.1:Distribution.Simple
  defaultMain, called at Setup.hs:3:8 in main:Main
Setup: Encountered missing dependencies:
containers >=0.4 && <0.6

builder for '/nix/store/hn2mqpqz94nmyjcs4pbvarq4gcxq5vxa-containers-unicode-symbols-0.3.1.1.drv' failed with exit code 1
error: build of '/nix/store/hn2mqpqz94nmyjcs4pbvarq4gcxq5vxa-containers-unicode-symbols-0.3.1.1.drv' failed