bus.rs: Make hex-dumping optional to cut deps

Cargo.toml

@@ -3,6 +3,11 @@ name = "chirp"
 version = "0.1.0"
 edition = "2021"
 
+[features]
+default = []
+rhexdump = ["dep:rhexdump"]
+serde = ["dep:serde"]
+
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [profile.release]
 opt-level = 'z'
@@ -17,11 +22,10 @@ overflow-checks = false
 
 
 [dependencies]
-gumdrop = "0.8.1"
-hex-wrapper = "1.3.2"
-minifb = "0.24.0"
+gumdrop = "^0.8.1"
+minifb = { version = "^0.24.0", features = ["wayland"] }
 owo-colors = "^3"
-rand = "0.8.5"
-rhexdump = "0.1.1"
-serde = { version = "^1.0", features = ["derive"] }
-thiserror = "1.0.39"
+rand = "^0.8.5"
+rhexdump = {version = "^0.1.1", optional = true }
+serde = { version = "^1.0", features = ["derive"], optional = true }
+thiserror = "^1.0.39"

src/bus.rs

@@ -53,12 +53,16 @@ pub enum Region {
 
 impl Display for Region {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}", match self {
+        write!(
+            f,
+            "{}",
+            match self {
                 Region::Charset => "charset",
                 Region::Program => "program",
                 Region::Screen => "screen",
                 Region::Stack => "stack",
-        })
+            }
+        )
     }
 }
 
@@ -188,6 +192,7 @@ impl Write<u16> for Bus {
     }
 }
 
+#[cfg(target_feature = "rhexdump")]
 impl Display for Bus {
     fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
         use rhexdump::Rhexdump;