flakes: cleanup

flake.nix

@@ -40,19 +40,11 @@
 					};
 				};
 
-                patchPhase = "";
 				nativeBuildInputs = [ pkgs.llvm ];
 				buildPhase = ''
-                export CARGO_HOME=$(mktemp -d cargo-home.XXX)
 				  cargo build --release --bin thermostat
 				'';
 
-                checkPhase = ''
-                    cargo test --target=${pkgs.rust.toRustTarget pkgs.stdenv.targetPlatform};
-                '';
-
-                # binaryName defaults to the `name` arg (i.e. the Rust package name);
-                # it is used as the Cargo binary filename
 				installPhase = ''
           mkdir -p $out $out/nix-support
           cp target/thumbv7em-none-eabihf/release/thermostat $out/thermostat.elf