From ee563bb987b8234a4d71b76f9b21918bb6840f86 Mon Sep 17 00:00:00 2001
From: Denis Lehmann <denis@opaque.tech>
Date: Thu, 11 Mar 2021 13:03:19 +0100
Subject: [PATCH] add rust_environment

---
 rust_environment/shell.nix | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)
 create mode 100644 rust_environment/shell.nix

diff --git a/rust_environment/shell.nix b/rust_environment/shell.nix
new file mode 100644
index 0000000..6255daf
--- /dev/null
+++ b/rust_environment/shell.nix
@@ -0,0 +1,30 @@
+{ pkgs ? import <nixpkgs> {} }:
+pkgs.mkShell {
+  NIX_ENFORCE_PURITY=0;
+  buildInputs = with pkgs; [
+    cargo
+    rustc
+  ];
+  shellHook = ''
+    function log_header {
+      echo -ne "==> \e[32m\e[1m$1\e[0m\n\n"
+    }
+    function log_subheader {
+      echo -ne "--> \e[33m\e[1m$1\e[0m\n\n"
+    }
+    function log {
+      echo -ne "    $1\n"
+    }
+
+    echo ""
+    log_header "rust_environment"
+    if [ -s Cargo.toml ]; then
+      log_subheader "found Cargo.toml, running 'cargo-build'"
+      cargo build
+      echo ""
+    fi
+    log_header "package versions"
+    log "$(rustc --version)"
+    log "$(cargo --version)"
+  '';
+}