nmattia

#!/usr/env/bin bash

# vim: set ft=bash

ROOT=$PWD

read -r -d '' ADJECTIVES <<'EOF'
agreeable
brave
calm

nmattia

let
  # Use pinned packages
  _nixpkgs = import <nixpkgs> {};
  nixpkgs = _nixpkgs.fetchFromGitHub
    ({
        owner = "nmattia";
        repo = "nixpkgs";
        rev = "02359c639193103812f7356564326556cbb41ca4";
        sha256= "1rg0czkxqynycw23v0dmk0vd2v17d6v3yr06bg23wqwpm3b5z0nd";
    });

nmattia

{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE InstanceSigs #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE NoMonomorphismRestriction #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE RebindableSyntax #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TupleSections #-}

nmattia

# Store the nix-created `dist` in `localSrc/.nix-cache` after build (whether
# successful or not) and re-injects it for subsequent builds.
#
# `./mask` should contain a haskell project with an `out.nix` file. That file
# should describe a typical cabal derivation with the extra field:
#
# preUnpack = ''
#   localSrc=${toString ./.}
# '';
#

nmattia

{anyPkgs ? import <nixpkgs> { }}:
let
  pkgs = import (anyPkgs.fetchFromGitHub {
      owner = "NixOS";
      repo = "nixpkgs";
      rev = "deec3c1dae62e8345451cd8c4ad41134ab95e88d";
      sha256 = "1l951xzklxfi2c161mcrps9dfsq76sj8fgq8d60y093bry66d3yc";
    }) {};
  ghc = pkgs.haskell.compiler.ghc7103;
  # tweak haskellSrc2nix to disable (failing) tests

nmattia

#!/usr/bin/env bash

set -e

the_pattern=$1
# We need to export because xargs runs in a subshell
export the_file=$2

if [ -z "${the_pattern}" ]; then
  echo pattern missing

nmattia

CREATE (:Value {value_ref: 42})

CREATE (:Value {value_ref: 1789})

CREATE (:Function)

MATCH (f:Function) WHERE id(f) = 33 SET f.function_name = "inc"

nmattia

{-# LANGUAGE FlexibleContexts       #-}
{-# LANGUAGE ConstraintKinds       #-}
{-# LANGUAGE ScopedTypeVariables    #-}
{-# LANGUAGE TypeApplications       #-}
{-# LANGUAGE AllowAmbiguousTypes    #-}
{-# LANGUAGE RankNTypes             #-}
{-# LANGUAGE FlexibleInstances      #-}
{-# LANGUAGE GADTs                  #-}
{-# LANGUAGE MultiParamTypeClasses  #-}
{-# LANGUAGE TypeInType             #-}

nmattia

integer/serialise/small positive -14%
integer/serialise/small negative -10%
integer/serialise/large positive -10%
integer/serialise/large negative -8%
integer/deserialise/small positive -62%
integer/deserialise/small negative -61%
integer/deserialise/large positive -27%
integer/deserialise/large negative -33%
time/serialise UTCTime -18%
time/deserialise UTCTime -21%

nmattia

#!/usr/bin/env stack
-- stack --install-ghc runghc --package cassava --package vector

{-|
 Compare two criterion outputs. Results are displayed in percent. Takes two
 filepaths: original csv and new csv.

 To generate csvs:
 stack bench my-project:my-bench --benchmark-arguments "--csv out.csv"