From 16c762a76f800e63f7e68511224bc5c3c081d4e7 Mon Sep 17 00:00:00 2001
From: Valeriu Predoi <valeriu.predoi@gmail.com>
Date: Mon, 21 Oct 2024 13:10:25 +0100
Subject: [PATCH] pin mamba in conda lock creation action

---
 .github/workflows/create-condalock-file.yml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/create-condalock-file.yml b/.github/workflows/create-condalock-file.yml
index 83c9c70c8f..e234d709b2 100644
--- a/.github/workflows/create-condalock-file.yml
+++ b/.github/workflows/create-condalock-file.yml
@@ -39,7 +39,9 @@ jobs:
           conda config --show
           # setup-miniconda@v3 installs an old conda and mamba
           # forcing a modern mamba updates both mamba and conda
-          conda install -c conda-forge "mamba>=1.4.8"
+          # unpin mamba after conda-lock=3 release
+          # see github.com/ESMValGroup/ESMValTool/issues/3782
+          conda install -c conda-forge "mamba>=1.4.8,<2"
           conda --version
           mamba --version
       - name: Gather Python info