From 70f3f4e48689bf42adf1ff01dbdeeb34030bbcf2 Mon Sep 17 00:00:00 2001
From: Roland Conybeare <rconybeare@gmail.com>
Date: Mon, 22 Sep 2025 12:18:51 -0400
Subject: [PATCH] nix build: xo-randomgen: build+install examples

---
 default.nix           |  2 +-
 pkgs/xo-randomgen.nix | 11 +++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/default.nix b/default.nix
index a1885c9f..59a59136 100644
--- a/default.nix
+++ b/default.nix
@@ -77,7 +77,6 @@ let
 
       in
         {
-          xo-randomgen      = self.callPackage pkgs/xo-randomgen.nix      {};
           xo-flatstring     = self.callPackage pkgs/xo-flatstring.nix     { buildDocs = true; };
           xo-ratio          = self.callPackage pkgs/xo-ratio.nix          { buildDocs = true; };
           xo-unit           = self.callPackage pkgs/xo-unit.nix           { buildDocs = true; };
@@ -103,6 +102,7 @@ let
             xo-indentlog      = self.callPackage pkgs/xo-indentlog.nix      { buildDocs = true; buildExamples = true; };
             xo-refcnt         = self.callPackage pkgs/xo-refcnt.nix         {};
             xo-subsys         = self.callPackage pkgs/xo-subsys.nix         {};
+            xo-randomgen      = self.callPackage pkgs/xo-randomgen.nix      {                   buildExamples = true; };
             xo-ordinaltree    = self.callPackage pkgs/xo-ordinaltree.nix    {};
             xo-pyutil         = self.callPackage pkgs/xo-pyutil.nix         {};
             xo-reflectutil    = self.callPackage pkgs/xo-reflectutil.nix    {};
diff --git a/pkgs/xo-randomgen.nix b/pkgs/xo-randomgen.nix
index 931d79a8..0976df36 100644
--- a/pkgs/xo-randomgen.nix
+++ b/pkgs/xo-randomgen.nix
@@ -1,9 +1,11 @@
 {
   # nixpkgs dependencies
-  stdenv, cmake, catch2,
+  lib, stdenv, cmake, catch2,
 
   # xo dependencies
   xo-cmake, xo-indentlog,
+
+  buildExamples ? false,
 } :
 
 stdenv.mkDerivation (finalattrs:
@@ -12,8 +14,13 @@ stdenv.mkDerivation (finalattrs:
 
     src = ../xo-randomgen;
 
-    cmakeFlags = ["-DCMAKE_MODULE_PATH=${xo-cmake}/share/cmake"];
+    cmakeFlags = ["-DCMAKE_MODULE_PATH=${xo-cmake}/share/cmake"]
+                 ++ lib.optionals buildExamples ["-DXO_ENABLE_EXAMPLES=on"];
+
+    inherit buildExamples;
+
     doCheck = true;
+
     nativeBuildInputs = [ cmake catch2 xo-cmake ];
     propagatedBuildInputs = [ xo-indentlog ];
   })