Remove atty in favor of is-terminal

The std version of it is only usable in v1.70 unfortunately.

Cargo.toml

@@ -59,7 +59,7 @@ render-tui = ["tui",
 render-line = ["crosstermion/color", "humantime", "unicode-width"]
 render-line-crossterm = ["crosstermion/crossterm"]
 render-line-termion = ["crosstermion/termion"]
-render-line-autoconfigure = ["atty"]
+render-line-autoconfigure = ["is-terminal"]
 
 local-time = ["time"]
 
@@ -88,7 +88,7 @@ time = { version = "0.3.2", optional = true, features = ["std", "local-offset",
 # line renderer
 ctrlc = { version = "3.1.4", optional = true, default-features = false, features = ['termination'] }
 signal-hook = { version = "0.3.9", optional = true, default-features = false }
-atty = { version = "0.2.14", optional = true }
+is-terminal = { version = "0.4.9", optional = true }
 
 # units
 bytesize = { version = "1.0.1", optional = true }
@@ -105,7 +105,7 @@ criterion = { version = "0.5.1", default-features = false }
 futures-util = { version = "0.3.4", default-features = false }
 argh = "0.1.3"
 futures = "0.3.5"
-atty = "0.2.14"
+is-terminal = "0.4.9"
 blocking = "1.0.0"
 once_cell = "1.4.0"
 async-executor = "1.1.0"

examples/shared/mod.rs

@@ -54,7 +54,7 @@ pub fn launch_ambient_gui(
         }
         .boxed(),
         "tui" => {
-            if atty::isnt(atty::Stream::Stdout) {
+            if !is_terminal::is_terminal(std::io::stdout()) {
                 eprintln!("Need a terminal on stdout to draw progress TUI");
                 futures_lite::future::ready(()).boxed()
             } else {

src/render/line/engine.rs

@@ -74,16 +74,6 @@ pub enum StreamKind {
     Stderr,
 }
 
-#[cfg(feature = "render-line-autoconfigure")]
-impl From<StreamKind> for atty::Stream {
-    fn from(s: StreamKind) -> Self {
-        match s {
-            StreamKind::Stdout => atty::Stream::Stdout,
-            StreamKind::Stderr => atty::Stream::Stderr,
-        }
-    }
-}
-
 /// Convenience
 impl Options {
     /// Automatically configure (and overwrite) the following fields based on terminal configuration.
@@ -94,7 +84,10 @@ impl Options {
     /// * hide-cursor (based on presence of 'signal-hook' feature.
     #[cfg(feature = "render-line-autoconfigure")]
     pub fn auto_configure(mut self, output: StreamKind) -> Self {
-        self.output_is_terminal = atty::is(output.into());
+        self.output_is_terminal = match output {
+            StreamKind::Stdout => is_terminal::is_terminal(std::io::stdout()),
+            StreamKind::Stderr => is_terminal::is_terminal(std::io::stderr()),
+        };
         self.colored = self.output_is_terminal && crosstermion::color::allowed();
         self.terminal_dimensions = crosstermion::terminal::size().unwrap_or((80, 20));
         #[cfg(feature = "signal-hook")]