Place config.toml in current working directory if config not found

src/bootstrap/bin/main.rs

@@ -35,7 +35,7 @@ fn main() {
 
     // NOTE: Since `./configure` generates a `config.toml`, distro maintainers will see the
     // changelog warning, not the `x.py setup` message.
-    let suggest_setup = !config.config.exists() && !matches!(config.cmd, Subcommand::Setup { .. });
+    let suggest_setup = config.config.is_none() && !matches!(config.cmd, Subcommand::Setup { .. });
     if suggest_setup {
         println!("warning: you have not made a `config.toml`");
         println!(

src/bootstrap/config.rs

@@ -80,7 +80,7 @@ pub struct Config {
     pub keep_stage_std: Vec<u32>,
     pub src: PathBuf,
     /// defaults to `config.toml`
-    pub config: PathBuf,
+    pub config: Option<PathBuf>,
     pub jobs: Option<u32>,
     pub cmd: Subcommand,
     pub incremental: bool,
@@ -942,7 +942,7 @@ impl Config {
         }
 
         config.changelog_seen = toml.changelog_seen;
-        config.config = toml_path;
+        config.config = if toml_path.exists() { Some(toml_path) } else { None };
 
         let build = toml.build.unwrap_or_default();
 

src/bootstrap/setup.rs

@@ -82,7 +82,7 @@ impl fmt::Display for Profile {
 }
 
 pub fn setup(config: &Config, profile: Profile) {
-    let path = &config.config;
+    let path = &config.config.clone().unwrap_or(PathBuf::from("config.toml"));
 
     if path.exists() {
         eprintln!(