Verify that the PATH has been set up correctly

When creating copies with yabridgectl. This should at least give an
advance warning that some additional steps are required when first
setting up yabridge.

tools/yabridgectl/src/actions.rs

@@ -26,6 +26,7 @@ use std::path::{Path, PathBuf};
 use crate::config::{Config, InstallationMethod};
 use crate::files;
 use crate::files::FoundFile;
+use crate::utils::{verify_path_setup, wrap};
 
 /// Add a direcotry to the plugin locations. Duplicates get ignord because we're using ordered sets.
 pub fn add_directory(config: &mut Config, path: PathBuf) -> Result<()> {
@@ -46,7 +47,7 @@ pub fn remove_directory(config: &mut Config, path: &Path) -> Result<()> {
     let orphan_files = files::index_so_files(path);
     if !orphan_files.is_empty() {
         println!(
-            "WARNING: Found {} leftover '.so' files still in this directory:",
+            "Warning: Found {} leftover '.so' files still in this directory:",
             orphan_files.len()
         );
 
@@ -248,5 +249,26 @@ pub fn do_sync(config: &Config, prune: bool, verbose: bool) -> Result<()> {
         num_skipped_files
     );
 
+    if config.method == InstallationMethod::Copy {
+        if let Err(shell_name) = verify_path_setup() {
+            println!(
+                "\n{}",
+                wrap(&format!(
+                    "Warning: 'yabridge-host.exe' is not present in your login shell's search \
+                     path. Yabridge won't be able to run using the copy-based installatin method \
+                     until this is fixed.\n\
+                     Add '{}' to {}'s login shell {} environment variable. See the \
+                     troubleshooting section of the readme for more details. Rerun this command to \
+                     verify that this has been set up correctly, and then reboot your system.\n\
+                     \n\
+                     https://github.com/robbert-vdh/yabridge#troubleshooting-common-issues",
+                    libyabridge_path.parent().unwrap().display(),
+                    shell_name.bright_white(),
+                    "PATH".bright_white()
+                ))
+            )
+        }
+    }
+
     Ok(())
 }