Setup direnv with `use nix` for haskell stack

.envrc

@@ -0,0 +1 @@
+use nix

.gitignore

@@ -1,4 +1,5 @@
 _cache/
 _site/
-.stack-work/
 .DS_Store
+.direnv/
+.stack-work/

shell.nix

@@ -0,0 +1,8 @@
+{ pkgs ? import <nixpkgs> { }, ghc ? pkgs.ghc }:
+pkgs.haskell.lib.buildStackProject {
+  name = "newtype.fr";
+  inherit ghc;
+  buildInputs = with pkgs; [ zlib ];
+  LANG = "en_US.UTF-8";
+  TMPDIR = "/tmp";
+}

stack.yaml

@@ -1,66 +1,42 @@
-# This file was automatically generated by 'stack init'
-#
-# Some commonly used options have been documented as comments in this file.
-# For advanced use and comprehensive documentation of the format, please see:
-# https://docs.haskellstack.org/en/stable/yaml_configuration/
+# For more information, see: http://docs.haskellstack.org/en/stable/yaml_configuration.html
 
-# Resolver to choose a 'specific' stackage snapshot or a compiler version.
-# A snapshot resolver dictates the compiler version and the set of packages
-# to be used for project dependencies. For example:
-#
-# resolver: lts-3.5
-# resolver: nightly-2015-09-21
-# resolver: ghc-7.10.2
-#
-# The location of a snapshot can be provided as a file or url. Stack assumes
-# a snapshot provided as a file might change, whereas a url resource does not.
-#
-# resolver: ./custom-snapshot.yaml
-# resolver: https://example.com/snapshots/2018-01-01.yaml
-resolver: nightly-2020-05-06
+# Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)
+resolver: lts-17.14
 
-# User packages to be built.
-# Various formats can be used as shown in the example below.
-#
-# packages:
-# - some-directory
-# - https://example.com/foo/bar/baz-0.0.2.tar.gz
-#   subdirs:
-#   - auto-update
-#   - wai
+# Local packages, usually specified by relative directory name
 packages:
-- .
-# Dependency packages to be pulled from upstream that are not in the resolver.
-# These entries can reference officially published versions as well as
-# forks / in-progress versions pinned to a git hash. For example:
-#
-# extra-deps:
-# - acme-missiles-0.3
-# - git: https://github.com/commercialhaskell/stack.git
-#   commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
-#
-# extra-deps: []
+- '.'
+
+# Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)
+extra-deps:
+- hakyll-4.13.4.1@sha256:af3096c611bcb164143df2d9543e88f1eaabe76e8f0261423aff8382f10368c3
+- pandoc-citeproc-0.17.0.2@sha256:39c5c60a5eca2c1cb50ae9a00dc7093ca1baac78ad5be4e222505de257dce456
 
 # Override default flag values for local packages and extra-deps
-# flags: {}
+flags: {}
 
 # Extra package databases containing global packages
-# extra-package-dbs: []
+extra-package-dbs: []
 
 # Control whether we use the GHC we find on the path
 # system-ghc: true
-#
+
 # Require a specific version of stack, using version ranges
 # require-stack-version: -any # Default
-# require-stack-version: ">=2.1"
-#
+# require-stack-version: >= 1.0.0
+
 # Override the architecture used by stack, especially useful on Windows
 # arch: i386
 # arch: x86_64
-#
+
 # Extra directories used by stack for building
 # extra-include-dirs: [/path/to/dir]
 # extra-lib-dirs: [/path/to/dir]
-#
+
 # Allow a newer minor version of GHC than the snapshot specifies
 # compiler-check: newer-minor
+
+nix:
+  enable: true
+  pure: true
+  shell-file: shell.nix

stack.yaml.lock

@@ -3,10 +3,24 @@
 # For more information, please see the documentation at:
 #   https://docs.haskellstack.org/en/stable/lock_files
 
-packages: []
+packages:
+- completed:
+    hackage: hakyll-4.13.4.1@sha256:af3096c611bcb164143df2d9543e88f1eaabe76e8f0261423aff8382f10368c3,9212
+    pantry-tree:
+      size: 7842
+      sha256: 2cf57f61b0eb6f30beb01f78a65078138bfee0e4a4d8b6630ac4ddd91c7de6db
+  original:
+    hackage: hakyll-4.13.4.1@sha256:af3096c611bcb164143df2d9543e88f1eaabe76e8f0261423aff8382f10368c3
+- completed:
+    hackage: pandoc-citeproc-0.17.0.2@sha256:39c5c60a5eca2c1cb50ae9a00dc7093ca1baac78ad5be4e222505de257dce456,8737
+    pantry-tree:
+      size: 25684
+      sha256: 8a5f6398d750902d79c215a4c8f85c74f3e7ea572dd1f950d57e784669ac7a48
+  original:
+    hackage: pandoc-citeproc-0.17.0.2@sha256:39c5c60a5eca2c1cb50ae9a00dc7093ca1baac78ad5be4e222505de257dce456
 snapshots:
 - completed:
-    size: 521183
-    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/nightly/2020/5/6.yaml
-    sha256: 8f91f3cd1ba1a7e0d478773969dc64236c76d8b0231e8ca3e0550f0593c15f57
-  original: nightly-2020-05-06
+    size: 567677
+    url: https://raw.githubusercontent.com/commercialhaskell/stackage-snapshots/master/lts/17/14.yaml
+    sha256: 3740f22286bf5e6e3d82f88125e1c708b6e27847211f956b530aa5d83cf39383
+  original: lts-17.14