Deprecate the brew cask step (fix #520) (#529)

src/steps/os/macos.rs

@@ -1,5 +1,5 @@
 use crate::execution_context::ExecutionContext;
-use crate::executor::{CommandExt, RunType};
+use crate::executor::RunType;
 use crate::terminal::{print_separator, prompt_yesno};
 use crate::{
     error::TopgradeError,
@@ -19,40 +19,6 @@ pub fn run_msupdate(ctx: &ExecutionContext) -> Result<()> {
     ctx.run_type().execute(msupdate).arg("--install").check_run()
 }
 
-pub fn run_brew_cask(ctx: &ExecutionContext) -> Result<()> {
-    let brew = require("brew")?;
-    print_separator("Brew Cask");
-
-    let config = ctx.config();
-    let run_type = ctx.run_type();
-
-    let cask_upgrade_exists = Command::new(&brew)
-        .args(&["--repository", "buo/cask-upgrade"])
-        .check_output()
-        .map(|p| Path::new(p.trim()).exists())?;
-
-    let cask_args = if cask_upgrade_exists {
-        let mut args = vec!["cu", "-y"];
-        if config.brew_cask_greedy() {
-            args.push("-a");
-        }
-        args
-    } else {
-        let mut args = vec!["upgrade", "--cask"];
-        if config.brew_cask_greedy() {
-            args.push("--greedy");
-        }
-        args
-    };
-    run_type.execute(&brew).args(&cask_args).check_run()?;
-
-    if ctx.config().cleanup() {
-        run_type.execute(&brew).arg("cleanup").check_run()?;
-    }
-
-    Ok(())
-}
-
 pub fn run_macports(ctx: &ExecutionContext) -> Result<()> {
     require("port")?;
     let sudo = ctx.sudo().as_ref().unwrap();