From 7f0fecce45c4e51fc3db2d7414cdf5f8339d4a93 Mon Sep 17 00:00:00 2001
From: Adam Dinwoodie <adam@dinwoodie.org>
Date: Sat, 21 Jun 2025 18:18:01 +0100
Subject: [PATCH] regionset: include README in package

The README file contains most of the documentation for how to use this
package, and is explicitly referenced in the manual.  Add it to the
compiled package so users can access it more easily, and make sure the
path to the file is correct, too.
---
 pkgs/by-name/re/regionset/package.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/by-name/re/regionset/package.nix b/pkgs/by-name/re/regionset/package.nix
index 547a307ea1fb..cd21a3f23873 100644
--- a/pkgs/by-name/re/regionset/package.nix
+++ b/pkgs/by-name/re/regionset/package.nix
@@ -16,9 +16,15 @@ stdenv.mkDerivation {
     sha256 = "1fgps85dmjvj41a5bkira43vs2aiivzhqwzdvvpw5dpvdrjqcp0d";
   };
 
+  prePatch = ''
+    substituteInPlace regionset.8 \
+        --replace-fail /usr/share/doc/ "$out"/share/doc/
+  '';
+
   installPhase = ''
     install -Dm755 {.,$out/bin}/regionset
     install -Dm644 {.,$out/share/man/man8}/regionset.8
+    install -Dm644 {.,$out/share/doc/regionset}/README
   '';
 
   meta = with lib; {