simplify the use of CiEnv

Signed-off-by: onur-ozkan <work@onurozkan.dev>

src/bootstrap/src/core/build_steps/test.rs

@@ -2087,7 +2087,7 @@ NOTE: if you're sure you want to do this, please open an issue as to why. In the
         let git_config = builder.config.git_config();
         cmd.arg("--git-repository").arg(git_config.git_repository);
         cmd.arg("--nightly-branch").arg(git_config.nightly_branch);
-        cmd.force_coloring_in_ci(builder.ci_env);
+        cmd.force_coloring_in_ci();
 
         #[cfg(feature = "build-metrics")]
         builder.metrics.begin_test_suite(

src/bootstrap/src/core/builder.rs

@@ -2157,7 +2157,7 @@ impl<'a> Builder<'a> {
         // Try to use a sysroot-relative bindir, in case it was configured absolutely.
         cargo.env("RUSTC_INSTALL_BINDIR", self.config.bindir_relative());
 
-        cargo.force_coloring_in_ci(self.ci_env);
+        cargo.force_coloring_in_ci();
 
         // When we build Rust dylibs they're all intended for intermediate
         // usage, so make sure we pass the -Cprefer-dynamic flag instead of

src/bootstrap/src/core/config/config.rs

@@ -2092,7 +2092,7 @@ impl Config {
 
         // CI should always run stage 2 builds, unless it specifically states otherwise
         #[cfg(not(test))]
-        if flags.stage.is_none() && crate::CiEnv::current() != crate::CiEnv::None {
+        if flags.stage.is_none() && build_helper::ci::CiEnv::is_ci() {
             match config.cmd {
                 Subcommand::Test { .. }
                 | Subcommand::Miri { .. }

src/bootstrap/src/lib.rs

@@ -26,7 +26,7 @@ use std::sync::OnceLock;
 use std::time::SystemTime;
 use std::{env, io, str};
 
-use build_helper::ci::{gha, CiEnv};
+use build_helper::ci::gha;
 use build_helper::exit;
 use sha2::digest::Digest;
 use termcolor::{ColorChoice, StandardStream, WriteColor};
@@ -168,7 +168,6 @@ pub struct Build {
     crates: HashMap<String, Crate>,
     crate_paths: HashMap<PathBuf, String>,
     is_sudo: bool,
-    ci_env: CiEnv,
     delayed_failures: RefCell<Vec<String>>,
     prerelease_version: Cell<Option<u32>>,
 
@@ -400,7 +399,6 @@ impl Build {
             crates: HashMap::new(),
             crate_paths: HashMap::new(),
             is_sudo,
-            ci_env: CiEnv::current(),
             delayed_failures: RefCell::new(Vec::new()),
             prerelease_version: Cell::new(None),
 

src/bootstrap/src/utils/exec.rs

@@ -175,8 +175,8 @@ impl BootstrapCommand {
     }
 
     /// If in a CI environment, forces the command to run with colors.
-    pub fn force_coloring_in_ci(&mut self, ci_env: CiEnv) {
-        if ci_env != CiEnv::None {
+    pub fn force_coloring_in_ci(&mut self) {
+        if CiEnv::is_ci() {
             // Due to use of stamp/docker, the output stream of bootstrap is not
             // a TTY in CI, so coloring is by-default turned off.
             // The explicit `TERM=xterm` environment is needed for