Replace atty with std::io::IsTerminal (#380)

Cargo.toml

@@ -22,7 +22,6 @@ path = "src/main.rs"
 [dependencies]
 anyhow = "1"
 app_dirs = { version = "2", package = "app_dirs2" }
-atty = "0.2"
 clap = { version = "4", features = ["std", "derive", "help", "usage", "cargo", "error-context", "color", "wrap_help"], default-features = false }
 env_logger = { version = "0.11", optional = true }
 log = "0.4"

src/main.rs

@@ -30,10 +30,13 @@ compile_error!(
     "exactly one of the features \"native-roots\", \"webpki-roots\" or \"native-tls\" must be enabled"
 );
 
-use std::{env, process};
+use std::{
+    env,
+    io::{self, IsTerminal},
+    process,
+};
 
 use app_dirs::AppInfo;
-use atty::Stream;
 use clap::Parser;
 
 mod cache;
@@ -258,7 +261,7 @@ fn main() {
         // * NO_COLOR env var isn't set: https://no-color.org/
         // * The output stream is stdout (not being piped)
         ColorOptions::Auto => {
-            ansi_support && env::var_os("NO_COLOR").is_none() && atty::is(Stream::Stdout)
+            ansi_support && env::var_os("NO_COLOR").is_none() && io::stdout().is_terminal()
         }
         // Disable styling
         ColorOptions::Never => false,