Update tic.yml

Author: Raphael Sonabend

.github/workflows/tic.yml

@@ -84,9 +84,13 @@ jobs:
           Rscript -e "if (!requireNamespace('remotes')) install.packages('remotes', type = 'source')"
           Rscript -e "if (getRversion() < '3.2' && !requireNamespace('curl')) install.packages('curl', type = 'source')"
 
-      - name: "[Stage] [Linux] Install curl"
+      - name: "[Stage] [Linux] Install curl and libgit2"
         if: runner.os == 'Linux'
-        run: sudo apt install libcurl4-openssl-dev
+        run: sudo apt install libcurl4-openssl-dev libgit2-dev
+
+      - name: "[Stage] [macOS] Install libgit2"
+        if: runner.os == 'macOS'
+        run: brew install libgit2
 
       - name: "[Stage] Install"
         if: matrix.config.os != 'macOS-latest' || matrix.config.r != 'devel'