diff --git a/pkgs/development/libraries/mesa/default.nix b/pkgs/development/libraries/mesa/default.nix
index 35a279865cc..2806ffea809 100644
--- a/pkgs/development/libraries/mesa/default.nix
+++ b/pkgs/development/libraries/mesa/default.nix
@@ -4,8 +4,7 @@
 , expat, libdrm, xorg, wayland, wayland-protocols, openssl
 , llvmPackages, libffi, libomxil-bellagio, libva-minimal
 , libelf, libvdpau
-, libglvnd
-, enableRadv ? true
+, libglvnd, libunwind
 , galliumDrivers ? ["auto"]
 , driDrivers ? ["auto"]
 , vulkanDrivers ? ["auto"]
@@ -32,7 +31,7 @@ with lib;
 let
   # Release calendar: https://www.mesa3d.org/release-calendar.html
   # Release frequency: https://www.mesa3d.org/releasing.html#schedule
-  version = "21.0.1";
+  version = "21.1.4";
   branch  = versions.major version;
 
 self = stdenv.mkDerivation {
@@ -46,7 +45,7 @@ self = stdenv.mkDerivation {
       "ftp://ftp.freedesktop.org/pub/mesa/${version}/mesa-${version}.tar.xz"
       "ftp://ftp.freedesktop.org/pub/mesa/older-versions/${branch}.x/${version}/mesa-${version}.tar.xz"
     ];
-    sha256 = "1fqj2xhhd1ary0pfg31jq6fqcnd6qgyrw1445nmz554k8n2ck7rp";
+    sha256 = "02z9g6zpkg1p1sm8f84xdi7v2n7x534x9pn565bvcr411527y5qz";
   };
 
   prePatch = "patchShebangs .";
@@ -65,6 +64,12 @@ self = stdenv.mkDerivation {
       url = "https://gitlab.freedesktop.org/mesa/mesa/commit/aebbf819df6d1e.patch";
       sha256 = "17248hyzg43d73c86p077m4lv1pkncaycr3l27hwv9k4ija9zl8q";
     })
+    # For RISC-V support:
+    (fetchpatch {
+      name = "add-riscv-default-selections.patch";
+      url = "https://gitlab.freedesktop.org/mesa/mesa/-/commit/9908da1b7a5eaf0156d458e0e24b694c070ba345.patch";
+      sha256 = "036gv95m5gzzs6qpgkydf5fwgdlm7kpbdfalg8vmayghd260rw1w";
+    })
   ] ++ optionals (stdenv.isDarwin && stdenv.isAarch64) [
     # Fix aarch64-darwin build, remove when upstreaam supports it out of the box.
     # See: https://gitlab.freedesktop.org/mesa/mesa/-/issues/1020
@@ -128,6 +133,7 @@ self = stdenv.mkDerivation {
     libpthreadstubs openssl /*or another sha1 provider*/
   ] ++ lib.optionals (elem "wayland" eglPlatforms) [ wayland wayland-protocols ]
     ++ lib.optionals stdenv.isLinux [ libomxil-bellagio libva-minimal ]
+    ++ lib.optionals stdenv.isDarwin [ libunwind ]
     ++ lib.optional withValgrind valgrind-light;
 
   depsBuildBuild = [ pkg-config ];
diff --git a/pkgs/development/libraries/mesa/missing-includes.patch b/pkgs/development/libraries/mesa/missing-includes.patch
index 72488893c6b..c17d5490855 100644
--- a/pkgs/development/libraries/mesa/missing-includes.patch
+++ b/pkgs/development/libraries/mesa/missing-includes.patch
@@ -9,14 +9,14 @@
  #include "pipe/p_compiler.h"
  #include "pipe/p_state.h"
  
---- ./src/amd/vulkan/winsys/amdgpu/radv_amdgpu_winsys.h
-+++ ./src/amd/vulkan/winsys/amdgpu/radv_amdgpu_winsys.h
+--- a/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_winsys.h
++++ b/src/amd/vulkan/winsys/amdgpu/radv_amdgpu_winsys.h
 @@ -28,6 +28,8 @@
  #ifndef RADV_AMDGPU_WINSYS_H
  #define RADV_AMDGPU_WINSYS_H
- 
+
 +#include <sys/types.h>
 +
- #include "radv_radeon_winsys.h"
- #include "ac_gpu_info.h"
- #include "addrlib/addrinterface.h"<Paste>
+ #include <amdgpu.h>
+ #include <pthread.h>
+ #include "util/list.h"