[PR PATCH] salt: add contextvars dependency conditional

[tsndqst <tsndqst@users.noreply.github.com>]

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There is a new pull request by tsndqst against master on the void-packages repository

https://github.com/tsndqst/void-packages salt-contextvars
https://github.com/void-linux/void-packages/pull/33331

salt: add contextvars dependency conditional
The recent update to 3003.3 broke the `salt` package.  This PR intends to fix it.
A description of the issue is in the saltstack repo https://github.com/saltstack/salt/issues/60483

tldr: contextvars is included in recent versions of python.

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- [x] I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
- [ ] I generally don't use the affected packages but briefly tested this PR

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A patch file from https://github.com/void-linux/void-packages/pull/33331.patch is attached

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From 41f280427ced6bc986ca861852d9d6435f05cb1c Mon Sep 17 00:00:00 2001
From: Tim Sandquist <tim.sandquist@gmail.com>
Date: Mon, 4 Oct 2021 21:15:30 -0500
Subject: [PATCH] salt: add contextvars dependency conditional

See https://github.com/saltstack/salt/issues/60483
---
 srcpkgs/salt/patches/requirements.patch | 6 ++++++
 srcpkgs/salt/template                   | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)
 create mode 100644 srcpkgs/salt/patches/requirements.patch

diff --git a/srcpkgs/salt/patches/requirements.patch b/srcpkgs/salt/patches/requirements.patch
new file mode 100644
index 000000000000..8b1217a30c44
--- /dev/null
+++ b/srcpkgs/salt/patches/requirements.patch
@@ -0,0 +1,6 @@
+--- a/requirements/base.txt
++++ b/requirements/base.txt
+@@ -6,2 +6,2 @@
+ distro>=1.0.1
+-contextvars
++contextvars; python_version < "3.7"
diff --git a/srcpkgs/salt/template b/srcpkgs/salt/template
index 7e9f1f7a140e..8959d4f90018 100644
--- a/srcpkgs/salt/template
+++ b/srcpkgs/salt/template
@@ -1,7 +1,7 @@
 # Template file for 'salt'
 pkgname=salt
 version=3003.3
-revision=1
+revision=2
 build_style=python3-module
 hostmakedepends="python3-setuptools"
 depends="python3-yaml python3-Jinja2 python3-requests python3-pyzmq