haskelldb/test.nix at master · m4dc4p/haskelldb · GitHub

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{ pkgs ? import <nixpkgs> { }, ... }:

let
  pgData   = "./pgData";
  testPkgs = ghc: [
    ghc.HUnit
    ghc.regex-compat
    ghc.HDBC
    ghc.HDBC-postgresql
  ];
in

pkgs.mkShell {
  inputsFrom  = [
    (pkgs.haskell.packages.ghc90.callCabal2nix "haskelldb-2.2.4.1" ./. { }).env
    (pkgs.haskell.packages.ghc90.ghcWithPackages testPkgs)
  ];
  buildInputs = [
    pkgs.cabal-install
    pkgs.postgresql
  ];
  shellHook = ''
    cabal build

    echo "Setting up PostgreSQL..."
    export PGDATA="$(realpath ${pgData})"
    echo "Initializing database cluster in local directory at $PGDATA, will run db server with current user $(whoami)"
    if [ -d "$PGDATA" ]; then
      rm -rf "$PGDATA"
    fi
    mkdir -p "$PGDATA"

    initdb --auth-local=trust --auth-host=trust --pgdata "$PGDATA" -c "unix_socket_directories=$PGDATA"
    pg_ctl --pgdata="$PGDATA" -l "$PGDATA/logfile" start

    trap "echo 'Stopping PostgreSQL'; pg_ctl --pgdata=$PGDATA -w stop" EXIT
  '';
}