Import lazy_static through normal use

blog/content/second-edition/posts/03-vga-text-buffer/index.md

@@ -478,7 +478,6 @@ Let's add the `lazy_static` crate to our project:
 ```rust
 // in src/main.rs
 
-#[macro_use]
 extern crate lazy_static;
 ```
 
@@ -490,13 +489,15 @@ version = "1.0"
 features = ["spin_no_std"]
 ```
 
-We need the `spin_no_std` feature, since we don't link the standard library. We also need the `#[macro_use]` attribute on the `extern crate` line to import the `lazy_static!` macro.
+We need the `spin_no_std` feature, since we don't link the standard library.
 
 With `lazy_static`, we can define our static `WRITER` without problems:
 
 ```rust
 // in src/vga_buffer.rs
 
+use lazy_static::lazy_static;
+
 lazy_static! {
     pub static ref WRITER: Writer = Writer {
         column_position: 0,

blog/content/second-edition/posts/05-integration-tests/index.md

@@ -85,6 +85,7 @@ mod serial;
 
 use uart_16550::SerialPort;
 use spin::Mutex;
+use lazy_static::lazy_static;
 
 lazy_static! {
     pub static ref SERIAL1: Mutex<SerialPort> = {
@@ -375,7 +376,6 @@ Cargo supports hybrid projects that are both a library and a binary. We only nee
 extern crate bootloader;
 extern crate spin;
 extern crate volatile;
-#[macro_use]
 extern crate lazy_static;
 extern crate uart_16550;
 extern crate x86_64;

blog/content/second-edition/posts/06-cpu-exceptions/index.md

@@ -382,6 +382,8 @@ We already imported the `lazy_static` crate when we [created an abstraction for
 ```rust
 // in src/interrupts.rs
 
+use lazy_static::lazy_static;
+
 lazy_static! {
     static ref IDT: InterruptDescriptorTable = {
         let mut idt = InterruptDescriptorTable::new();

blog/content/second-edition/posts/07-double-faults/index.md

@@ -235,6 +235,7 @@ pub mod gdt;
 
 use x86_64::VirtAddr;
 use x86_64::structures::tss::TaskStateSegment;
+use lazy_static::lazy_static;
 
 pub const DOUBLE_FAULT_IST_INDEX: u16 = 0;
 

src/gdt.rs

@@ -1,6 +1,7 @@
 use x86_64::structures::gdt::{Descriptor, GlobalDescriptorTable, SegmentSelector};
 use x86_64::structures::tss::TaskStateSegment;
 use x86_64::VirtAddr;
+use lazy_static::lazy_static;
 
 pub const DOUBLE_FAULT_IST_INDEX: u16 = 0;
 

src/interrupts.rs

@@ -8,6 +8,7 @@ use gdt;
 use pic8259_simple::ChainedPics;
 use spin;
 use x86_64::structures::idt::{ExceptionStackFrame, InterruptDescriptorTable};
+use lazy_static::lazy_static;
 
 pub const PIC_1_OFFSET: u8 = 32;
 pub const PIC_2_OFFSET: u8 = PIC_1_OFFSET + 8;

src/lib.rs

@@ -4,7 +4,6 @@
 extern crate bootloader;
 extern crate spin;
 extern crate volatile;
-#[macro_use]
 extern crate lazy_static;
 extern crate pic8259_simple;
 extern crate uart_16550;

src/serial.rs

@@ -1,5 +1,6 @@
 use spin::Mutex;
 use uart_16550::SerialPort;
+use lazy_static::lazy_static;
 
 lazy_static! {
     pub static ref SERIAL1: Mutex<SerialPort> = {

src/vga_buffer.rs

@@ -1,6 +1,7 @@
 use core::fmt;
 use spin::Mutex;
 use volatile::Volatile;
+use lazy_static::lazy_static;
 
 lazy_static! {
     /// A global `Writer` instance that can be used for printing to the VGA text buffer.