From 184eb16832d45d64de0dfa70e7dba461ce5e7051 Mon Sep 17 00:00:00 2001
From: Guilhem Saurel <guilhem.saurel@laas.fr>
Date: Wed, 29 Jul 2026 11:40:21 +0200
Subject: [PATCH 1/3] octomap: fix for gcc16

---
 pkgs/by-name/oc/octomap/package.nix | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/pkgs/by-name/oc/octomap/package.nix b/pkgs/by-name/oc/octomap/package.nix
index 718bf0405725..95545079289f 100644
--- a/pkgs/by-name/oc/octomap/package.nix
+++ b/pkgs/by-name/oc/octomap/package.nix
@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchFromGitHub,
+  fetchpatch2,
   cmake,
 }:
 
@@ -16,6 +17,29 @@ stdenv.mkDerivation (finalAttrs: {
     hash = "sha256-QxQHxxFciR6cvB/b8i0mr1hqGxOXhXmB4zgdsD977Mw=";
   };
 
+  patches = [
+    (fetchpatch2 {
+      name = "prepare-for-next-patch.patch";
+      url = "https://github.com/OctoMap/octomap/commit/c5c714139a82969915b84cd5548dedcd257ebf1e.patch?full_index=1";
+      stripLen = 1;
+      excludes = [ ".gitignore" ];
+      hash = "sha256-p/qvBiqeZt93aI7p7MYG6SUwcRlchHV9AnXKVTzBhRs=";
+    })
+    # fix for gcc16, merged upstream
+    (fetchpatch2 {
+      name = "fix-gcc16.patch";
+      url = "https://github.com/OctoMap/octomap/commit/d7e54ca1c4074f88381c07bfdd685bd4fced0636.patch?full_index=1";
+      stripLen = 1;
+      hash = "sha256-8ZwX1CJFykMduEEXIqTRH9VHn7ItvO/ZfdNNDIDmtss=";
+    })
+  ];
+
+  # ref. https://github.com/OctoMap/octomap/pull/448 not merged yet
+  postPatch = ''
+    substituteInPlace include/octomap/OcTreeKey.h --replace-fail \
+      "#include <ciso646>" ""
+  '';
+
   sourceRoot = "${finalAttrs.src.name}/octomap";
 
   nativeBuildInputs = [ cmake ];

From 7ff93c13d4944c922db3ed3e892915f65bb9b5a9 Mon Sep 17 00:00:00 2001
From: Guilhem Saurel <guilhem.saurel@laas.fr>
Date: Wed, 29 Jul 2026 11:41:03 +0200
Subject: [PATCH 2/3] octomap: strictDeps & __structuredAttrs

---
 pkgs/by-name/oc/octomap/package.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkgs/by-name/oc/octomap/package.nix b/pkgs/by-name/oc/octomap/package.nix
index 95545079289f..3a916a98ff41 100644
--- a/pkgs/by-name/oc/octomap/package.nix
+++ b/pkgs/by-name/oc/octomap/package.nix
@@ -49,6 +49,9 @@ stdenv.mkDerivation (finalAttrs: {
     "-Wno-error=deprecated-declarations"
   ];
 
+  strictDeps = true;
+  __structuredAttrs = true;
+
   meta = {
     description = "Probabilistic, flexible, and compact 3D mapping library for robotic systems";
     homepage = "https://octomap.github.io/";

From 35ac551501641996b950f7bd05b31498c1085819 Mon Sep 17 00:00:00 2001
From: Guilhem Saurel <guilhem.saurel@laas.fr>
Date: Wed, 29 Jul 2026 11:44:53 +0200
Subject: [PATCH 3/3] octomap: adopt

---
 pkgs/by-name/oc/octomap/package.nix | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/pkgs/by-name/oc/octomap/package.nix b/pkgs/by-name/oc/octomap/package.nix
index 3a916a98ff41..4b1d524f9130 100644
--- a/pkgs/by-name/oc/octomap/package.nix
+++ b/pkgs/by-name/oc/octomap/package.nix
@@ -13,7 +13,7 @@ stdenv.mkDerivation (finalAttrs: {
   src = fetchFromGitHub {
     owner = "OctoMap";
     repo = "octomap";
-    rev = "v${finalAttrs.version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-QxQHxxFciR6cvB/b8i0mr1hqGxOXhXmB4zgdsD977Mw=";
   };
 
@@ -53,10 +53,14 @@ stdenv.mkDerivation (finalAttrs: {
   __structuredAttrs = true;
 
   meta = {
+    changelog = "https://github.com/OctoMap/octomap/releases/tag/${finalAttrs.src.tag}";
     description = "Probabilistic, flexible, and compact 3D mapping library for robotic systems";
     homepage = "https://octomap.github.io/";
     license = lib.licenses.bsd3;
-    maintainers = with lib.maintainers; [ lopsided98 ];
-    platforms = lib.platforms.unix;
+    maintainers = with lib.maintainers; [
+      lopsided98
+      nim65s
+    ];
+    platforms = lib.platforms.unix ++ lib.platforms.windows;
   };
 })