From c0fc25c4430271519b632e48cb4a83593b1dff19 Mon Sep 17 00:00:00 2001
From: Johannes Kirschbauer <hsjobeki@gmail.com>
Date: Wed, 3 Jan 2024 21:21:06 +0100
Subject: [PATCH] add uuid, since heading ids must be unique and there is no
 other way

---
 Cargo.lock  | 10 ++++++++++
 Cargo.toml  |  1 +
 src/main.rs |  6 +++++-
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index 827c6f4..6437229 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -241,6 +241,7 @@ dependencies = [
  "serde",
  "serde_json",
  "textwrap",
+ "uuid",
 ]
 
 [[package]]
@@ -423,6 +424,15 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
 
+[[package]]
+name = "uuid"
+version = "1.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5e395fcf16a7a3d8127ec99782007af141946b4795001f876d54fb0d55978560"
+dependencies = [
+ "getrandom",
+]
+
 [[package]]
 name = "version_check"
 version = "0.9.4"
diff --git a/Cargo.toml b/Cargo.toml
index 13dd513..ef145ee 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 textwrap = "0.16"
 clap = { version = "4.4.4", features = ["derive"] }
+uuid = { version = "1.6.1", features = ["v4"] }
 
 [dev-dependencies]
 insta = "1.31.0"
diff --git a/src/main.rs b/src/main.rs
index fc1c188..df61447 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -40,6 +40,7 @@ use std::io::Write;
 
 use clap::Parser;
 use std::path::PathBuf;
+use uuid::Uuid;
 
 /// Command line arguments for nixdoc
 #[derive(Debug, Parser)]
@@ -300,7 +301,10 @@ fn handle_heading(line: &str, levels: usize) -> String {
         _ => "#".repeat(hashes.len() + levels),
     };
 
-    format!("{leading_trivials}{new_hashes} {rest}")
+    format!(
+        "{leading_trivials}{new_hashes} {rest} {{#{rest}-{}}}",
+        Uuid::new_v4()
+    )
 }
 
 /// Dumb, mutable, hacky doc comment "parser".