Remove deprecated libivy/bc features

src/widgets/launcher.rs

@@ -164,51 +164,12 @@ impl Launcher {
     }
 }
 
-#[cfg(feature = "ivy")]
-fn calc(s: &str) -> Result<String, String> {
-    libivy::eval(s)
-}
-
-#[cfg(feature = "rcalc")]
 fn calc(s: &str) -> Result<String, String> {
     rcalc_lib::parse::eval(s, &mut rcalc_lib::parse::CalcState::new())
         .map(|x| format!("{}", x).to_string())
         .map_err(|x| format!("{}", x).to_string())
 }
 
-#[cfg(feature = "bc")]
-fn calc(s: &str) -> Result<String, String> {
-    use std::io::Write;
-    let mut child = std::process::Command::new("bc")
-        .stdin(std::process::Stdio::piped())
-        .stdout(std::process::Stdio::piped())
-        .stderr(std::process::Stdio::piped())
-        .arg("--mathlib")
-        .spawn()
-        .map_err(|_| "bc not available".to_string())?;
-    {
-        let stdin = child.stdin.as_mut().unwrap();
-        stdin
-            .write_all(s.as_bytes())
-            .map_err(|_| "unable to write to stdin".to_string())?;
-        stdin
-            .write_all("\n".as_bytes())
-            .map_err(|_| "unable to write to stdin".to_string())?;
-    }
-    let output = child
-        .wait_with_output()
-        .map_err(|_| "unable to run bc".to_string())?;
-    Ok(std::str::from_utf8(&output.stdout)
-        .map_err(|_| "unable to read from bc")?
-        .trim()
-        .to_string())
-}
-
-#[cfg(not(any(feature = "ivy", feature = "bc", feature = "rcalc")))]
-fn calc(_s: &str) -> Result<String, String> {
-    Err("no calculator implementation available".to_string())
-}
-
 fn wlcopy(s: &str) -> Result<(), String> {
     let mut child = std::process::Command::new("wl-copy")
         .stdin(std::process::Stdio::null())