Add `x.py setup`

- Suggest `x.py setup` if config.toml doesn't exist yet (twice, once
before and once after the build)
- Prompt for a profile if not given on the command line
- Print the configuration file that will be used
- Print helpful starting commands after setup
- Link to the dev-guide after finishing
- Note that distro maintainers will see the changelog warning

1 files changed, 16 insertions, 3 deletions

diff --git a/src/bootstrap/bin/main.rs b/src/bootstrap/bin/main.rs
index f7512aa9fce..669dd7a33de 100644
--- a/src/bootstrap/bin/main.rs
+++ b/src/bootstrap/bin/main.rs
@@ -7,21 +7,34 @@
 
 use std::env;
 
-use bootstrap::{Build, Config};
+use bootstrap::{Build, Config, Subcommand};
 
 fn main() {
     let args = env::args().skip(1).collect::<Vec<_>>();
     let config = Config::parse(&args);
 
     let changelog_suggestion = check_version(&config);
-    if let Some(suggestion) = &changelog_suggestion {
+
+    // 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 { .. });
+    if suggest_setup {
+        println!("warning: you have not made a `config.toml`");
+        println!("help: consider running `x.py setup` or copying `config.toml.example`");
+    } else if let Some(suggestion) = &changelog_suggestion {
         println!("{}", suggestion);
     }
 
     Build::new(config).build();
 
-    if let Some(suggestion) = changelog_suggestion {
+    if suggest_setup {
+        println!("warning: you have not made a `config.toml`");
+        println!("help: consider running `x.py setup` or copying `config.toml.example`");
+    } else if let Some(suggestion) = &changelog_suggestion {
         println!("{}", suggestion);
+    }
+
+    if suggest_setup || changelog_suggestion.is_some() {
         println!("note: this message was printed twice to make it more likely to be seen");
     }
 }