From f3851cb7814fd0429613f7640810b822bda4467d Mon Sep 17 00:00:00 2001
From: Maren van Otterdijk <maren.van.otterdijk@gmail.com>
Date: Sun, 7 Jul 2024 17:06:40 +0200
Subject: [PATCH] swiProlog: 9.1.21 -> 9.2.5

---
 pkgs/development/compilers/swi-prolog/default.nix | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/compilers/swi-prolog/default.nix b/pkgs/development/compilers/swi-prolog/default.nix
index 305c77fbdb8f..c9cb3a9fdeb6 100644
--- a/pkgs/development/compilers/swi-prolog/default.nix
+++ b/pkgs/development/compilers/swi-prolog/default.nix
@@ -34,7 +34,8 @@
 }:
 
 let
-  version = "9.1.21";
+  # minorVersion is even for stable, odd for unstable
+  version = "9.2.5";
   packInstall = swiplPath: pack:
     ''${swiplPath}/bin/swipl -g "pack_install(${pack}, [package_directory(\"${swiplPath}/lib/swipl/pack\"), silent(true), interactive(false)])." -t "halt."
     '';
@@ -43,11 +44,14 @@ stdenv.mkDerivation {
   pname = "swi-prolog";
   inherit version;
 
+  # SWI-Prolog has two repositories: swipl and swipl-devel.
+  # - `swipl`, which tracks stable releases and backports
+  # - `swipl-devel` which tracks continuous development
   src = fetchFromGitHub {
     owner = "SWI-Prolog";
-    repo = "swipl-devel";
+    repo = "swipl";
     rev = "V${version}";
-    hash = "sha256-c4OSntnwIzo6lGhpyNVtNM4el5FGrn8kcz8WkDRfQhU=";
+    hash = "sha256-WbpYu6b0WPfKoAOkBZduWK20vwOYuDUDpJuj19qzPtw=";
     fetchSubmodules = true;
   };