diff --git a/01_wait_forever/.rustfmt.toml b/01_wait_forever/.rustfmt.toml
index f255bc13..4c96ef12 100644
--- a/01_wait_forever/.rustfmt.toml
+++ b/01_wait_forever/.rustfmt.toml
@@ -1,3 +1,4 @@
 newline_style = "Unix"
 edition = "2018"
 format_code_in_doc_comments = true
+merge_imports = true
diff --git a/01_wait_forever/.vscode/settings.json b/01_wait_forever/.vscode/settings.json
index 5fc0875d..058f9200 100644
--- a/01_wait_forever/.vscode/settings.json
+++ b/01_wait_forever/.vscode/settings.json
@@ -1,4 +1,5 @@
 {
+    "editor.formatOnSave": true,
     "rust.features": ["bsp_rpi3"],
     "rust.all_targets": false,
 }
diff --git a/02_runtime_init/.rustfmt.toml b/02_runtime_init/.rustfmt.toml
index f255bc13..4c96ef12 100644
--- a/02_runtime_init/.rustfmt.toml
+++ b/02_runtime_init/.rustfmt.toml
@@ -1,3 +1,4 @@
 newline_style = "Unix"
 edition = "2018"
 format_code_in_doc_comments = true
+merge_imports = true
diff --git a/02_runtime_init/.vscode/settings.json b/02_runtime_init/.vscode/settings.json
index 5fc0875d..058f9200 100644
--- a/02_runtime_init/.vscode/settings.json
+++ b/02_runtime_init/.vscode/settings.json
@@ -1,4 +1,5 @@
 {
+    "editor.formatOnSave": true,
     "rust.features": ["bsp_rpi3"],
     "rust.all_targets": false,
 }
diff --git a/03_hacky_hello_world/.rustfmt.toml b/03_hacky_hello_world/.rustfmt.toml
index f255bc13..4c96ef12 100644
--- a/03_hacky_hello_world/.rustfmt.toml
+++ b/03_hacky_hello_world/.rustfmt.toml
@@ -1,3 +1,4 @@
 newline_style = "Unix"
 edition = "2018"
 format_code_in_doc_comments = true
+merge_imports = true
diff --git a/03_hacky_hello_world/.vscode/settings.json b/03_hacky_hello_world/.vscode/settings.json
index 5fc0875d..058f9200 100644
--- a/03_hacky_hello_world/.vscode/settings.json
+++ b/03_hacky_hello_world/.vscode/settings.json
@@ -1,4 +1,5 @@
 {
+    "editor.formatOnSave": true,
     "rust.features": ["bsp_rpi3"],
     "rust.all_targets": false,
 }
diff --git a/03_hacky_hello_world/src/print.rs b/03_hacky_hello_world/src/print.rs
index c85d37e7..ce6587b5 100644
--- a/03_hacky_hello_world/src/print.rs
+++ b/03_hacky_hello_world/src/print.rs
@@ -4,8 +4,7 @@
 
 //! Printing facilities.
 
-use crate::bsp;
-use crate::interface;
+use crate::{bsp, interface};
 use core::fmt;
 
 /// Prints without a newline.
diff --git a/04_zero_overhead_abstraction/.rustfmt.toml b/04_zero_overhead_abstraction/.rustfmt.toml
index f255bc13..4c96ef12 100644
--- a/04_zero_overhead_abstraction/.rustfmt.toml
+++ b/04_zero_overhead_abstraction/.rustfmt.toml
@@ -1,3 +1,4 @@
 newline_style = "Unix"
 edition = "2018"
 format_code_in_doc_comments = true
+merge_imports = true
diff --git a/04_zero_overhead_abstraction/.vscode/settings.json b/04_zero_overhead_abstraction/.vscode/settings.json
index 5fc0875d..058f9200 100644
--- a/04_zero_overhead_abstraction/.vscode/settings.json
+++ b/04_zero_overhead_abstraction/.vscode/settings.json
@@ -1,4 +1,5 @@
 {
+    "editor.formatOnSave": true,
     "rust.features": ["bsp_rpi3"],
     "rust.all_targets": false,
 }
diff --git a/04_zero_overhead_abstraction/src/print.rs b/04_zero_overhead_abstraction/src/print.rs
index c85d37e7..ce6587b5 100644
--- a/04_zero_overhead_abstraction/src/print.rs
+++ b/04_zero_overhead_abstraction/src/print.rs
@@ -4,8 +4,7 @@
 
 //! Printing facilities.
 
-use crate::bsp;
-use crate::interface;
+use crate::{bsp, interface};
 use core::fmt;
 
 /// Prints without a newline.
diff --git a/05_safe_globals/.rustfmt.toml b/05_safe_globals/.rustfmt.toml
index f255bc13..4c96ef12 100644
--- a/05_safe_globals/.rustfmt.toml
+++ b/05_safe_globals/.rustfmt.toml
@@ -1,3 +1,4 @@
 newline_style = "Unix"
 edition = "2018"
 format_code_in_doc_comments = true
+merge_imports = true
diff --git a/05_safe_globals/.vscode/settings.json b/05_safe_globals/.vscode/settings.json
index 5fc0875d..058f9200 100644
--- a/05_safe_globals/.vscode/settings.json
+++ b/05_safe_globals/.vscode/settings.json
@@ -1,4 +1,5 @@
 {
+    "editor.formatOnSave": true,
     "rust.features": ["bsp_rpi3"],
     "rust.all_targets": false,
 }
diff --git a/05_safe_globals/src/print.rs b/05_safe_globals/src/print.rs
index c85d37e7..ce6587b5 100644
--- a/05_safe_globals/src/print.rs
+++ b/05_safe_globals/src/print.rs
@@ -4,8 +4,7 @@
 
 //! Printing facilities.
 
-use crate::bsp;
-use crate::interface;
+use crate::{bsp, interface};
 use core::fmt;
 
 /// Prints without a newline.
diff --git a/06_drivers_gpio_uart/.rustfmt.toml b/06_drivers_gpio_uart/.rustfmt.toml
index f255bc13..4c96ef12 100644
--- a/06_drivers_gpio_uart/.rustfmt.toml
+++ b/06_drivers_gpio_uart/.rustfmt.toml
@@ -1,3 +1,4 @@
 newline_style = "Unix"
 edition = "2018"
 format_code_in_doc_comments = true
+merge_imports = true
diff --git a/06_drivers_gpio_uart/.vscode/settings.json b/06_drivers_gpio_uart/.vscode/settings.json
index 5fc0875d..058f9200 100644
--- a/06_drivers_gpio_uart/.vscode/settings.json
+++ b/06_drivers_gpio_uart/.vscode/settings.json
@@ -1,4 +1,5 @@
 {
+    "editor.formatOnSave": true,
     "rust.features": ["bsp_rpi3"],
     "rust.all_targets": false,
 }
diff --git a/06_drivers_gpio_uart/src/print.rs b/06_drivers_gpio_uart/src/print.rs
index c85d37e7..ce6587b5 100644
--- a/06_drivers_gpio_uart/src/print.rs
+++ b/06_drivers_gpio_uart/src/print.rs
@@ -4,8 +4,7 @@
 
 //! Printing facilities.
 
-use crate::bsp;
-use crate::interface;
+use crate::{bsp, interface};
 use core::fmt;
 
 /// Prints without a newline.