alexpeits

with import <nixpkgs> {};

stdenv.mkDerivation {
  name = "miranda";
  buildInputs = [ gcc ];
  src = ./.;
  configurePhase = ''
    make cleanup
    patchShebangs quotehostinfo
  '';

alexpeits

# to see ghc versions:
# nix-instantiate --eval -E "with import ./nix/nixpkgs.nix {}; lib.attrNames haskell.compiler"
{ pkgs ? null, compiler ? null, withHoogle ? true }:

let

  nixpkgs = if isNull pkgs then
    import (import ./nix/sources.nix).nixos-stable { }
  else if builtins.typeOf pkgs == "set" then
    pkgs

alexpeits

docker run -p 8080:80 mendhak/http-https-echo
curl http://localhost/whatever  # works

# in another terminal
export hostmachine="$(docker network inspect --format='{{range .IPAM.Config}}{{.Gateway}}{{end}}' bridge)"
docker run --add-host hostmachine:$hostmachine --net=host -it debian bash

apt-get update && apt-get install -y curl
curl http://hostmachine:8080/whatever  # I expect this to work

alexpeits

{ nixpkgs ? import <nixpkgs> {}, compiler ? "default", doBenchmark ? false }:

let

  inherit (nixpkgs) pkgs;

  f = { mkDerivation, base, containers, data-default, directory
      , extensible-exceptions, filepath, mtl, process, QuickCheck
      , setlocale, stdenv, unix, utf8-string, X11
      }:

alexpeits

Keybase proof

I hereby claim:

• I am alexpeits on github.
• I am alexpeits (https://keybase.io/alexpeits) on keybase.
• I have a public key ASAtZxx1hUjLBX9w9TNQcTLX-8Xq1gd6n4YqXtQZ1PKDHAo

To claim this, I am signing this object:

alexpeits

# Usage: use_nix [...]
#
# Load environment variables from `nix-shell`.
# If you have a `default.nix` or `shell.nix` one of these will be used and
# the derived environment will be stored at ./.direnv/env-<hash>
# and symlink to it will be created at ./.direnv/default.
# Dependencies are added to the GC roots, such that the environment remains persistent.
#
# The resulting environment is cached for better performance.
#

alexpeits

ghcid:
	ghcid -a --command="stack ghci -- src/**/*.hs"

ghcid-doctest:
	ghcid -a --command='stack ghci -- src/**/*.hs' --test ':!stack exec doctest -- --verbose -XOverloadedStrings src/'

alexpeits

{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeApplications #-}
module LensError where

import Control.Lens
import Control.Monad.Error.Lens

data User
  = User

alexpeits

{-# LANGUAGE ViewPatterns #-}
{-# LANGUAGE AllowAmbiguousTypes        #-}
{-# LANGUAGE DataKinds                  #-}
{-# LANGUAGE DeriveAnyClass             #-}
{-# LANGUAGE DeriveGeneric              #-}
{-# LANGUAGE DeriveTraversable          #-}
{-# LANGUAGE DerivingVia                #-}
{-# LANGUAGE FlexibleContexts           #-}
{-# LANGUAGE FlexibleInstances          #-}
{-# LANGUAGE GADTs                      #-}