From a09d9bd0062e43ff45961c80ebd26d919af107ac Mon Sep 17 00:00:00 2001
From: 1Regina <46968488+1Regina@users.noreply.github.com>
Date: Wed, 14 Jul 2021 16:44:08 +0800
Subject: [PATCH] install and upgrade stack

---
 doc/gf-developers.t2t | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/doc/gf-developers.t2t b/doc/gf-developers.t2t
index fafc3f4c4..840fa3762 100644
--- a/doc/gf-developers.t2t
+++ b/doc/gf-developers.t2t
@@ -30,6 +30,21 @@ If the Haskell Tool Stack is already installed, enter the following command in a
 **On Mac OS and Windows**, the tools can be downloaded from their respective
 web sites, as described below.
 
+=== Stack ===
+The primary installation method is via ``stack``. To install [stack https://docs.haskellstack.org/en/stable/README/]
+- **On Mac and other Unix**, do either
+```
+curl -sSL https://get.haskellstack.org/ | sh
+```
+**OR**
+```
+wget -qO- https://get.haskellstack.org/ | sh
+```
+- **On Windows and other operating systems** :check out the install and [upgrade guide https://docs.haskellstack.org/en/stable/install_and_upgrade]
+
+If you already have stack installed, upgrade it to the latest version by running: ``stack upgrade``
+
+
 === Git ===
 
 To get the GF source code, you also need //Git//.