diff --git a/Makefile b/Makefile
index f2ea6b6..31ba4fa 100644
--- a/Makefile
+++ b/Makefile
@@ -1,64 +1,52 @@
-BIN ?= bin
 CABAL ?= cabal
+CABAL_FLAGS ?=
 DIST ?= dist
-EMPTY ?= .make
-PROJECT_NAME ?= rollbar-hs
-STACK ?= stack
-STACK_WORK ?= .stack-work
-VERBOSITY ?= warn
+GHCID ?= ghcid
+GHCID_FLAGS ?= --ghc-options=-fno-code
+HPACK ?= hpack
+NIX_SHELL ?= nix-shell
+NIX_SHELL_FLAGS ?=
+PROJECT_NAME := rollbar-hs
 
 CABAL_FILE := $(PROJECT_NAME).cabal
+CONFIGURE := $(DIST)/setup-config
 DOC_TEST := $(DIST)/build/doc-test/doc-test
-GHCID := $(BIN)/ghcid
-STACK_FLAGS := --verbosity $(VERBOSITY)
 
 .DEFAULT_GOAL := build
 
-$(BIN) $(DIST) $(EMPTY):
-	mkdir -p $@
-
 $(CABAL_FILE): package.yaml
-	# `stack` has no way to run `hpack` directly.
-	# We can run `hpack` indirectly with little overhead.
-	$(STACK) $(STACK_FLAGS) build --dry-run
+	$(HPACK)
 
-$(DOC_TEST):
-	rm -f $(EMPTY)/build
-	$(MAKE) $(EMPTY)/build
+$(CONFIGURE): $(CABAL_FILE)
+	$(CABAL) $(CABAL_FLAGS) configure --enable-tests
 
-$(EMPTY)/build: $(EMPTY)/stack-setup README.md Setup.hs package.yaml stack.yaml src/**/*.hs test/**/*.hs | $(DIST)
-	$(STACK) $(STACK_FLAGS) build --no-run-tests --test
-	cp -R $$($(STACK) $(STACK_FLAGS) path --dist-dir)/build $(DIST)
-	touch $@
+.PHONY: build
+build $(DOC_TEST): $(CONFIGURE) default.nix
+	$(CABAL) $(CABAL_FLAGS) build
 
-$(EMPTY)/stack-setup: | $(EMPTY)
-	$(STACK) $(STACK_FLAGS) setup
-	touch $@
-
-$(GHCID): $(EMPTY)/stack-setup | $(BIN)
-	$(STACK) $(STACK_FLAGS) install ghcid --local-bin-path $(BIN)
-
-.PHONT: build
-build: $(EMPTY)/build
-
-.PHONY: cabal-check
-cabal-check: $(CABAL_FILE)
-	$(CABAL) check
+.PHONY: check
+check: $(CABAL_FILE)
+	$(CABAL) $(CABAL_FLAGS) check
 
 .PHONY: clean
 clean:
 	rm -f $(CABAL_FILE)
-	rm -fr $(BIN)
+	rm -f default.nix
 	rm -fr $(DIST)
-	rm -fr $(EMPTY)
-	rm -fr $(STACK_WORK)
+
+default.nix: $(CABAL_FILE)
+	cabal2nix . > $@
 
 .PHONY: sdist
-sdist: cabal-check | $(DIST)
-	$(CABAL) sdist
+sdist: check
+	$(CABAL) $(CABAL_FLAGS) sdist
+
+.PHONY: shell
+shell:
+	$(NIX_SHELL) --pure $(NIX_SHELL_FLAGS)
 
 .PHONY: test
-test: $(EMPTY)/build test-doc-test
+test: test-doc-test
 
 .PHONY: test-doc-test
 test-doc-test: $(DOC_TEST)
@@ -66,8 +54,8 @@ test-doc-test: $(DOC_TEST)
 
 .PHONY: upload-hackage
 upload-hackage: sdist
-	@ $(CABAL) upload $(DIST)/$(PROJECT_NAME)-*.tar.gz
+	@ $(CABAL) $(CABAL_FLAGS) upload $(DIST)/$(PROJECT_NAME)-*.tar.gz
 
 .PHONY: watch
-watch: $(GHCID)
-	$(GHCID)
+watch: $(CONFIGURE)
+	$(GHCID) --command "cabal repl lib:$(PROJECT_NAME) $(GHCID_FLAGS)"
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..b4daf61
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,21 @@
+{ mkDerivation, aeson, base, bytestring, case-insensitive, hostname
+, hspec, hspec-golden-aeson, http-client, http-conduit, http-types
+, network, QuickCheck, stdenv, text, time, unordered-containers
+, uuid
+}:
+mkDerivation {
+  pname = "rollbar-hs";
+  version = "0.3.1.0";
+  src = ./.;
+  libraryHaskellDepends = [
+    aeson base bytestring case-insensitive hostname http-client
+    http-conduit http-types network text time unordered-containers uuid
+  ];
+  testHaskellDepends = [
+    aeson base bytestring case-insensitive hspec hspec-golden-aeson
+    QuickCheck text unordered-containers
+  ];
+  homepage = "https://github.com/joneshf/rollbar-hs#readme";
+  description = "Core Rollbar data types and APIs";
+  license = stdenv.lib.licenses.bsd3;
+}
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..cd3fd44
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,43 @@
+{ compiler ? "ghc822" }:
+
+let
+
+  default = haskell-packages.callPackage (import ./default.nix) {};
+
+  derivation = nixpkgs.haskell.lib.addBuildTools default tools;
+
+  haskell-packages = nixpkgs.haskell.packages.${compiler};
+
+  nixpkgs = import nixpkgs-tarball {};
+
+  nixpkgs-revision = "120b013e0c082d58a5712cde0a7371ae8b25a601";
+
+  nixpkgs-sha256 = "0hk4y2vkgm1qadpsm4b0q1vxq889jhxzjx3ragybrlwwg54mzp4f";
+
+  nixpkgs-tarball = builtins.fetchTarball {
+    sha256 = nixpkgs-sha256;
+    url = "https://github.com/NixOS/nixpkgs/archive/${nixpkgs-revision}.tar.gz";
+  };
+
+  # Tools affected by the compiler version.
+  tools-compiler = [
+    haskell-packages.cabal-install
+    haskell-packages.ghc
+    haskell-packages.ghcid
+    haskell-packages.hpack
+  ];
+
+  # Tools that deal with the basic project infrastructure.
+  tools-infrastructure = [
+    nixpkgs.cabal2nix
+    nixpkgs.curl
+  ];
+
+  # All of the tools.
+  tools =
+    tools-compiler ++
+    tools-infrastructure;
+
+in
+
+  derivation.env
diff --git a/stack.yaml b/stack.yaml
deleted file mode 100644
index 35d283a..0000000
--- a/stack.yaml
+++ /dev/null
@@ -1,66 +0,0 @@
-# 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/
-
-# 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
-# resolver: ghcjs-0.1.0_ghc-7.10.2
-# resolver:
-#  name: custom-snapshot
-#  location: "./custom-snapshot.yaml"
-resolver: lts-10.5
-
-# 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
-# - location:
-#    git: https://github.com/commercialhaskell/stack.git
-#    commit: e7b331f14bcffb8367cd58fbfc8b40ec7642100a
-# - location: https://github.com/commercialhaskell/stack/commit/e7b331f14bcffb8367cd58fbfc8b40ec7642100a
-#   extra-dep: true
-#  subdirs:
-#  - auto-update
-#  - wai
-#
-# A package marked 'extra-dep: true' will only be built if demanded by a
-# non-dependency (i.e. a user package), and its test suites and benchmarks
-# will not be run. This is useful for tweaking upstream packages.
-packages:
-- .
-# Dependency packages to be pulled from upstream that are not in the resolver
-# (e.g., acme-missiles-0.3)
-# extra-deps: []
-
-# Override default flag values for local packages and extra-deps
-# flags: {}
-
-# Extra package databases containing global packages
-# 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: ">=1.6"
-#
-# 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
\ No newline at end of file