gdb with `cargo run`

.cargo/config

@@ -1,5 +1,5 @@
 [target.thumbv7em-none-eabihf]
-runner = 'gdb'
+runner = "arm-none-eabihf-gdb -q -x openocd.gdb"
 rustflags = [
   "-C", "link-arg=-Tlink.x",
 ]

shell.nix

@@ -41,7 +41,6 @@ stdenv.mkDerivation {
     # Let openocd output scroll by
     sleep 1
 
-    echo "Run 'cargo build --release --features=semihosting'"
-    echo "Then '${targetPlatform.config}-gdb target/thumbv7em-none-eabihf/release/adc2tcp'"
+    echo "Run 'cargo run --release --features=semihosting'"
   '';
 }