replace derivative crate with derive_more crate

Cargo.toml

@@ -32,7 +32,6 @@ chrono = "0.4"
 clap-verbosity-flag = "2.2.2"
 clap = { version = "4.5.19", features = ["derive"] }
 crossterm = "0.28.1"
-derivative = "2.2.0"
 ipnetwork = "0.20.0"
 itertools = "0.13.0"
 log = "0.4.22"
@@ -47,6 +46,7 @@ tokio = { version = "1.40", features = ["rt", "sync"] }
 trust-dns-resolver = "0.23.2"
 unicode-width = "0.2.0"
 strum = { version = "0.26.3", features = ["derive"] }
+derive_more = {version = "1.0.0", features = ["debug"]}
 
 [target.'cfg(any(target_os = "android", target_os = "linux"))'.dependencies]
 procfs = "0.17.0"
@@ -71,7 +71,7 @@ clap = { version = "4.5.19", features = ["derive"] }
 clap-verbosity-flag = "2.2.2"
 clap_complete = "4.5.32"
 clap_mangen = "0.2.23"
-derivative = "2.2.0"
+derive_more = {version = "1.0.0", features = ["debug"]}
 strum = { version = "0.26.3", features = ["derive"] }
 
 [target.'cfg(target_os = "windows")'.build-dependencies]

src/cli.rs

@@ -2,11 +2,10 @@ use std::{net::Ipv4Addr, path::PathBuf};
 
 use clap::{Args, Parser, ValueEnum, ValueHint};
 use clap_verbosity_flag::{InfoLevel, Verbosity};
-use derivative::Derivative;
+use derive_more::Debug;
 use strum::EnumIter;
 
-#[derive(Clone, Debug, Derivative, Parser)]
-#[derivative(Default)]
+#[derive(Clone, Debug, Parser, Default)]
 #[command(name = "bandwhich", version)]
 pub struct Opt {
     #[arg(short, long)]
@@ -34,7 +33,6 @@ pub struct Opt {
     pub log_to: Option<PathBuf>,
 
     #[command(flatten)]
-    #[derivative(Default(value = "Verbosity::new(0, 0)"))]
     pub verbosity: Verbosity<InfoLevel>,
 
     #[command(flatten)]

src/display/components/display_bandwidth.rs

@@ -1,13 +1,13 @@
-use std::fmt;
-
-use derivative::Derivative;
-
 use crate::cli::UnitFamily;
+use derive_more::Debug;
+use std::fmt;
 
-#[derive(Copy, Clone, Derivative)]
-#[derivative(Debug)]
+#[derive(Copy, Clone, Debug)]
 pub struct DisplayBandwidth {
-    #[derivative(Debug(format_with = "fmt_f64"))]
+    // Custom format for reduced precision.
+    // Workaround for FP calculation discrepancy between Unix and Windows.
+    // See https://github.com/rust-lang/rust/issues/111405#issuecomment-2055964223.
+    #[debug("{bandwidth:.10e}")]
     pub bandwidth: f64,
     pub unit_family: BandwidthUnitFamily,
 }
@@ -19,17 +19,9 @@ impl fmt::Display for DisplayBandwidth {
     }
 }
 
-/// Custom formatter with reduced precision.
-///
-/// Workaround for FP calculation discrepancy between Unix and Windows.
-/// See https://github.com/rust-lang/rust/issues/111405#issuecomment-2055964223.
-fn fmt_f64(val: &f64, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
-    write!(f, "{val:.10e}")
-}
-
 /// Type wrapper around [`UnitFamily`] to provide extra functionality.
-#[derive(Copy, Clone, Derivative, Default, Eq, PartialEq)]
-#[derivative(Debug = "transparent")]
+#[derive(Copy, Clone, Debug, Default, Eq, PartialEq)]
+#[debug("{_0:?}")]
 pub struct BandwidthUnitFamily(UnitFamily);
 impl From<UnitFamily> for BandwidthUnitFamily {
     fn from(value: UnitFamily) -> Self {

src/display/components/table.rs

@@ -1,6 +1,6 @@
-use std::{collections::HashMap, fmt, net::IpAddr, ops::Index, rc::Rc};
+use std::{collections::HashMap, net::IpAddr, ops::Index, rc::Rc};
 
-use derivative::Derivative;
+use derive_more::Debug;
 use itertools::Itertools;
 use ratatui::{
     layout::{Constraint, Rect},
@@ -165,8 +165,7 @@ impl TableData {
 ///
 /// Note that the number of columns here is independent of the number of columns
 /// being actually shown. If width-constrained, we might only show some of the columns.
-#[derive(Clone, Derivative)]
-#[derivative(Debug)]
+#[derive(Clone, Debug)]
 struct NColsTableData<const C: usize> {
     /// The name of each column.
     column_names: [&'static str; C],
@@ -176,20 +175,13 @@ struct NColsTableData<const C: usize> {
     ///
     /// This function should return a vector of column indices.
     /// The indices should be less than `C`; otherwise this will cause a runtime panic.
-    #[derivative(Debug(format_with = "debug_fn::<C>"))]
+    #[debug("Rc</* function pointer */>")]
     column_selector: Rc<ColumnSelectorFn>,
 }
 
 /// Clippy wanted me to write this. 💢
 type ColumnSelectorFn = dyn Fn(&DisplayLayout) -> Vec<usize>;
 
-fn debug_fn<const C: usize>(
-    _func: &Rc<ColumnSelectorFn>,
-    f: &mut fmt::Formatter,
-) -> Result<(), fmt::Error> {
-    write!(f, "Rc</* function pointer */>")
-}
-
 /// A table displayed by bandwhich.
 #[derive(Clone, Debug)]
 pub struct Table {