solana: make network flags mutually exclusive

Author: kcsongor

cli/src/index.ts

@@ -66,7 +66,7 @@ yargs(hideBin(process.argv))
                         const objectFile = "example_native_token_transfers.so";
                         const programId = "nttiK1SepaQt6sZ4WGW5whvc9tEnGXGxuKeptcQPCcS";
                         assertNetwork(network);
-                        await $`cargo build-sbf --manifest-path=${dir}/Cargo.toml --features "${cargoNetworkFeature(network)}"`
+                        await $`cargo build-sbf --manifest-path=${dir}/Cargo.toml --no-default-features --features "${cargoNetworkFeature(network)}"`
                         await $`solana program deploy --program-id ${programId} ${dir}/target/deploy/${objectFile} --keypair ${keypair} -u ${solanaMoniker(network)}`
                     })
                 .demandCommand()

solana/programs/example-native-token-transfers/src/lib.rs

@@ -1,5 +1,16 @@
 use anchor_lang::prelude::*;
 
+// TODO: is there a more elegant way of checking that these 3 features are mutually exclusive?
+
+#[cfg(all(feature = "mainnet", feature = "solana-devnet"))]
+compile_error!("Cannot enable both mainnet and solana-devnet features at the same time");
+
+#[cfg(all(feature = "mainnet", feature = "tilt-devnet"))]
+compile_error!("Cannot enable both mainnet and tilt-devnet features at the same time");
+
+#[cfg(all(feature = "solana-devnet", feature = "tilt-devnet"))]
+compile_error!("Cannot enable both solana-devnet and tilt-devnet features at the same time");
+
 pub mod bitmap;
 pub mod clock;
 pub mod config;