From d6be909d9b99c4b7389046c6c3c9d05aefcb5971 Mon Sep 17 00:00:00 2001
From: Thomas Watson <twatson52@icloud.com>
Date: Thu, 18 Feb 2021 01:06:34 +0000
Subject: [PATCH 1/2] g2o: include dependencies necessary to build CHOLMOD

Previously, CHOLMOD was enabled but not built because blas and lapack were missing.
---
 pkgs/development/libraries/g2o/default.nix | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/g2o/default.nix b/pkgs/development/libraries/g2o/default.nix
index 675d994cf0e..b3c4fa8a894 100644
--- a/pkgs/development/libraries/g2o/default.nix
+++ b/pkgs/development/libraries/g2o/default.nix
@@ -1,5 +1,5 @@
-{ lib, stdenv, mkDerivation, fetchFromGitHub, cmake, eigen, suitesparse, libGLU
-, qtbase, libqglviewer, makeWrapper }:
+{ lib, stdenv, mkDerivation, fetchFromGitHub, cmake, eigen, suitesparse, blas
+, lapack, libGLU, qtbase, libqglviewer, makeWrapper }:
 
 mkDerivation rec {
   pname = "g2o";
@@ -18,7 +18,7 @@ mkDerivation rec {
   separateDebugInfo = true;
 
   nativeBuildInputs = [ cmake makeWrapper ];
-  buildInputs = [ eigen suitesparse libGLU qtbase libqglviewer ];
+  buildInputs = [ eigen suitesparse blas lapack libGLU qtbase libqglviewer ];
 
   # Silence noisy warning
   CXXFLAGS = "-Wno-deprecated-copy";

From 0d5188323aef5bcc478f0c23d34ee2c4c3919efc Mon Sep 17 00:00:00 2001
From: Thomas Watson <twatson52@icloud.com>
Date: Thu, 18 Feb 2021 01:59:21 +0000
Subject: [PATCH 2/2] g2o: 20200410 -> 20201223

---
 pkgs/development/libraries/g2o/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/development/libraries/g2o/default.nix b/pkgs/development/libraries/g2o/default.nix
index b3c4fa8a894..2469e17efec 100644
--- a/pkgs/development/libraries/g2o/default.nix
+++ b/pkgs/development/libraries/g2o/default.nix
@@ -3,13 +3,13 @@
 
 mkDerivation rec {
   pname = "g2o";
-  version = "20200410";
+  version = "20201223";
 
   src = fetchFromGitHub {
     owner = "RainerKuemmerle";
     repo = pname;
     rev = "${version}_git";
-    sha256 = "11rgj2g9mmwajlr69pjkjvxjyn88afa0r4bchjyvmxswjccizlg2";
+    sha256 = "sha256-Ik6uBz4Z4rc5+mPNdT8vlNZSBom4Tvt8Y6myBC/s0m8=";
   };
 
   # Removes a reference to gcc that is only used in a debug message