diff --git a/srcpkgs/0ad/patches/spidermonkey-78.6-rust-1.50.patch b/srcpkgs/0ad/patches/spidermonkey-78.6-rust-1.50.patch
new file mode 100644
index 0000000000..95007b32f2
--- /dev/null
+++ b/srcpkgs/0ad/patches/spidermonkey-78.6-rust-1.50.patch
@@ -0,0 +1,107 @@
+From 087a277e66c0456c2d6fdb7403d032ad09cbd18b Mon Sep 17 00:00:00 2001
+From: wraitii <wraitii@3db68df2-c116-0410-a063-a993310a9797>
+Date: Sat, 27 Feb 2021 09:31:17 +0000
+Subject: [PATCH] Patch SM78.6 for Rust 1.50
+
+Upstreamed from https://hg.mozilla.org/releases/mozilla-esr78/rev/0e8f444683cb
+(this fix is integrated in SM78.8)
+
+Reviewed By: s0600204
+
+Differential Revision: https://code.wildfiregames.com/D3590
+
+
+
+git-svn-id: https://svn.wildfiregames.com/public/ps/trunk@24941 3db68df2-c116-0410-a063-a993310a9797
+---
+ libraries/source/spidermonkey/FixRust150.diff | 65 +++++++++++++++++++
+ libraries/source/spidermonkey/patch.sh        |  4 ++
+ 2 files changed, 69 insertions(+)
+ create mode 100644 libraries/source/spidermonkey/FixRust150.diff
+
+diff --git a/libraries/source/spidermonkey/FixRust150.diff b/libraries/source/spidermonkey/FixRust150.diff
+new file mode 100644
+index 00000000000..cfb0d58b4a0
+--- /dev/null
++++ b/libraries/source/spidermonkey/FixRust150.diff
+@@ -0,0 +1,65 @@
++
++# HG changeset patch
++# User Emilio Cobos Álvarez <emilio@crisal.io>
++# Date 1609006565 0
++# Node ID 0e8f444683cb9c4079d3b2250f32f986043ea582
++# Parent  55097a5cf353f1b2a2228820bdf26bb69a1372a0
++Bug 1684261 - Fix build with rust nightly. r=jrmuizel, a=RyanVM
++
++Fixes errors like:
++
++  dependency (nix) specification is ambiguous. Only one of `branch`, `tag` or `rev` is allowed.
++
++I've left the most specific dependency, but for wgpu the rev is not
++right, so I've kept the branch which effectively preserves behavior.
++
++Differential Revision: https://phabricator.services.mozilla.com/D100485
++
++diff --git a/.cargo/config.in b/.cargo/config.in
++--- a/.cargo/config.in
+++++ b/.cargo/config.in
++@@ -1,16 +1,16 @@
++ # This file contains vendoring instructions for cargo.
++ # It was generated by `mach vendor rust`.
++ # Please do not edit.
++ 
++ [source."https://github.com/shravanrn/nix/"]
++-branch = "r0.13.1"
++ git = "https://github.com/shravanrn/nix/"
++ replace-with = "vendored-sources"
+++rev = "4af6c367603869a30fddb5ffb0aba2b9477ba92e"
++ 
++ [source."https://github.com/mozilla/rkv"]
++ git = "https://github.com/mozilla/rkv"
++ replace-with = "vendored-sources"
++ rev = "e3c3388e6632cf55e08d773b32e58b1cab9b2731"
++ 
++ [source."https://github.com/mozilla/neqo"]
++ git = "https://github.com/mozilla/neqo"
++diff --git a/Cargo.lock b/Cargo.lock
++--- a/Cargo.lock
+++++ b/Cargo.lock
++@@ -3200,7 +3200,7 @@
++ [[package]]
++ name = "nix"
++ version = "0.13.1"
++-source = "git+https://github.com/shravanrn/nix/?branch=r0.13.1#4af6c367603869a30fddb5ffb0aba2b9477ba92e"
+++source = "git+https://github.com/shravanrn/nix/?rev=4af6c367603869a30fddb5ffb0aba2b9477ba92e#4af6c367603869a30fddb5ffb0aba2b9477ba92e"
++ dependencies = [
++  "bitflags",
++  "cc",
++diff --git a/Cargo.toml b/Cargo.toml
++--- a/Cargo.toml
+++++ b/Cargo.toml
++@@ -60,8 +60,8 @@
++ [patch.crates-io]
++ packed_simd = { git = "https://github.com/hsivonen/packed_simd", rev="3541e3818fdc7c2a24f87e3459151a4ce955a67a" }
++ rlbox_lucet_sandbox = { git = "https://github.com/PLSysSec/rlbox_lucet_sandbox/", rev="d510da5999a744c563b0acd18056069d1698273f" }
++-nix = { git = "https://github.com/shravanrn/nix/", branch = "r0.13.1", rev="4af6c367603869a30fddb5ffb0aba2b9477ba92e" }
++-spirv_cross = { git = "https://github.com/kvark/spirv_cross", branch = "wgpu3", rev = "20191ad2f370afd6d247edcb9ff9da32d3bedb9c" }
+++nix = { git = "https://github.com/shravanrn/nix/", rev="4af6c367603869a30fddb5ffb0aba2b9477ba92e" }
+++spirv_cross = { git = "https://github.com/kvark/spirv_cross", branch = "wgpu3" }
++ # failure's backtrace feature might break our builds, see bug 1608157.
++ failure = { git = "https://github.com/badboy/failure", rev = "64af847bc5fdcb6d2438bec8a6030812a80519a5" }
++ failure_derive = { git = "https://github.com/badboy/failure", rev = "64af847bc5fdcb6d2438bec8a6030812a80519a5" }
++
+diff --git a/libraries/source/spidermonkey/patch.sh b/libraries/source/spidermonkey/patch.sh
+index 58be1fbdef0..879964b0f2e 100644
+--- a/libraries/source/spidermonkey/patch.sh
++++ b/libraries/source/spidermonkey/patch.sh
+@@ -39,6 +39,10 @@ patch -p1 < ../FixMacBuild.diff
+ # https://bugzilla.mozilla.org/show_bug.cgi?id=1536491
+ patch -p1 < ../FixRpiUnalignedFpAccess.diff
+ 
++# Bug 1684261 upstreamed from 78.8: https://hg.mozilla.org/releases/mozilla-esr78/rev/0e8f444683cb
++# Note that this isn't quite the upstream patch to match our version.
++patch -p1 < ../FixRust150.diff
++
+ # Patch those separately, as they might interfere with normal behaviour.
+ if [ "$(uname -s)" = "FreeBSD" ];
+ then
diff --git a/srcpkgs/0ad/template b/srcpkgs/0ad/template
index d6bbdb4831..f6e6b41899 100644
--- a/srcpkgs/0ad/template
+++ b/srcpkgs/0ad/template
@@ -1,7 +1,7 @@
 # Template file for '0ad'
 pkgname=0ad
 version=0.0.24b
-revision=2
+revision=3
 archs="x86_64* i686* aarch64* armv7l* ppc64le*"
 wrksrc="${pkgname}-${version}-alpha"
 hostmakedepends="pkg-config perl cmake python3 rust cargo yasm tar clang"