Basic nix rust setup

init-rust.sh

#!/usr/bin/env bash
set -Eeuxo pipefail

type git >/dev/null 2>&1 || { echo >&2 "I require git but it's not installed.  Aborting."; exit 1; }
type nix >/dev/null 2>&1 || { echo >&2 "I require nix but it's not installed.  Aborting."; exit 1; }
type niv >/dev/null 2>&1 || { echo >&2 "I require niv but it's not installed.  Aborting."; exit 1; }
type direnv >/dev/null 2>&1 || { echo >&2 "I require direnv but it's not installed.  Aborting."; exit 1; }
type lorri >/dev/null 2>&1 || { echo >&2 "I require lorri but it's not installed.  Aborting."; exit 1; }

git init # initialize git repository
git ignore rust > .gitignore # create gitignore file from haskell template

export GITHUB_TOKEN=${gpg2 -q --for-your-eyes-only --no-tty -d $PASSWORD_STORE_DIR/services/github-token.gpg}

niv init # initialize niv
niv update nixpkgs -b nixpkgs-unstable
niv add mozilla/nixpkgs-mozilla



export author="Patrick D. Elliott"
export email="patrick.d.elliott@gmail.com"


# rust.nix
cat <<EOF > ./nix/rust.nix
# nix/rust.nix
{ sources ? import ./sources.nix }:

let
  pkgs =
    import sources.nixpkgs { overlays = [ (import sources.nixpkgs-mozilla) ]; };
  channel = "nightly";
  date = "2020-06-10";
  targets = [ ];
  extensions = [
  "clippy"
  "rls"
  "rust-docs"
  "rust-analysis"
];
  chan = pkgs.rustChannelOfTargets channel date targets;
in chan
EOF

cat << EOF > ./shell.nix
# shell.nix
let
  sources = import ./nix/sources.nix;
  rust = import ./nix/rust.nix { inherit sources; };
  pkgs = import sources.nixpkgs { };
in
pkgs.mkShell {
  buildInputs = [
    rust
  ];
}
EOF

# Create direnv file
cat << 'EOF' > .envrc
eval "\$(lorri direnv)"
EOF

cargo init
git add .