From 3d5b9d9a5d42b4fb2d6add245ea4874fa309d669 Mon Sep 17 00:00:00 2001
From: Thomas Robitaille <thomas.robitaille@gmail.com>
Date: Mon, 23 Oct 2023 13:35:41 +0100
Subject: [PATCH 1/2] Fix compatibility with latest developer version of
 astropy

---
 glue/plugins/coordinate_helpers/link_helpers.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/glue/plugins/coordinate_helpers/link_helpers.py b/glue/plugins/coordinate_helpers/link_helpers.py
index 1ac9bea9d..217a798f6 100644
--- a/glue/plugins/coordinate_helpers/link_helpers.py
+++ b/glue/plugins/coordinate_helpers/link_helpers.py
@@ -21,12 +21,12 @@ class BaseCelestialMultiLink(BaseMultiLink):
 
     def forwards(self, in_lon, in_lat):
         cin = self.frame_in(in_lon * u.deg, in_lat * u.deg)
-        cout = cin.transform_to(self.frame_out)
+        cout = cin.transform_to(self.frame_out())
         return cout.spherical.lon.degree, cout.spherical.lat.degree
 
     def backwards(self, out_lon, out_lat):
         cout = self.frame_out(out_lon * u.deg, out_lat * u.deg)
-        cin = cout.transform_to(self.frame_in)
+        cin = cout.transform_to(self.frame_in())
         return cin.spherical.lon.degree, cin.spherical.lat.degree
 
     # Backward-compatibility with glue-core <0.15

From b479bc0db10f6ccf7494722e9d9643015b37e60a Mon Sep 17 00:00:00 2001
From: Thomas Robitaille <thomas.robitaille@gmail.com>
Date: Mon, 23 Oct 2023 13:37:19 +0100
Subject: [PATCH 2/2] Fix RTD configuration

---
 .readthedocs.yml | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/.readthedocs.yml b/.readthedocs.yml
index 309f6d1bf..2d9052f0f 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -1,7 +1,9 @@
 version: 2
 
 build:
-  image: latest
+  os: "ubuntu-22.04"
+  tools:
+    python: "3"
 
 sphinx:
   builder: html
@@ -9,7 +11,6 @@ sphinx:
   fail_on_warning: true
 
 python:
-  version: 3.8
   install:
     - method: pip
       path: .