CI: add timeout and retry to apt-get install steps

Bare `sudo apt-get install -y` with no `timeout-minutes` and no retry let a stalled Ubuntu mirror hang CI for hours — two 358-minute hangs on 2026-08-18 across two edition repos ten minutes apart, and four more hangs on 2026-08-19 each cleared only by cancel-and-rerun.

Every apt-installing step now carries a step-level `timeout-minutes` and runs up to three attempts with a per-attempt `timeout`, so a stalled fetch fails fast and a transient mirror outage is ridden out rather than burning the job. Package lists are unchanged.

Tracked in QuantEcon/project-translation#43.

Author: mmcky

.github/workflows/ci.yml

@@ -26,18 +26,16 @@ jobs:
           # and does not upgrade.
           pip install "jax==0.11.0"
       - name: Install latex dependencies
+        timeout-minutes: 30
         run: |
-          sudo apt-get -qq update
-          sudo apt-get install -y     \
-            texlive-latex-recommended \
-            texlive-latex-extra       \
-            texlive-fonts-recommended \
-            texlive-fonts-extra       \
-            texlive-xetex             \
-            latexmk                   \
-            xindy                     \
-            dvipng                    \
-            cm-super
+          # Retried with a per-attempt timeout: a stalled Ubuntu mirror otherwise
+          # hangs this step for hours (two 358-minute hangs on 2026-08-18).
+          pkgs="texlive-latex-recommended texlive-latex-extra texlive-fonts-recommended texlive-fonts-extra texlive-xetex latexmk xindy dvipng cm-super"
+          for attempt in 1 2 3; do
+            timeout 9m sudo bash -c "apt-get -qq update && apt-get install -y $pkgs" && break
+            if [ "$attempt" = 3 ]; then echo "apt-get failed after 3 attempts"; exit 1; fi
+            echo "apt-get attempt $attempt failed; retrying in 30s"; sleep 30
+          done
       - name: Display Conda Environment Versions
         shell: bash -l {0}
         run: conda list

.github/workflows/publish.yml

@@ -31,18 +31,16 @@ jobs:
           # and does not upgrade.
           pip install "jax==0.11.0"
       - name: Install latex dependencies
+        timeout-minutes: 30
         run: |
-          sudo apt-get -qq update
-          sudo apt-get install -y     \
-            texlive-latex-recommended \
-            texlive-latex-extra       \
-            texlive-fonts-recommended \
-            texlive-fonts-extra       \
-            texlive-xetex             \
-            latexmk                   \
-            xindy                     \
-            dvipng                    \
-            cm-super
+          # Retried with a per-attempt timeout: a stalled Ubuntu mirror otherwise
+          # hangs this step for hours (two 358-minute hangs on 2026-08-18).
+          pkgs="texlive-latex-recommended texlive-latex-extra texlive-fonts-recommended texlive-fonts-extra texlive-xetex latexmk xindy dvipng cm-super"
+          for attempt in 1 2 3; do
+            timeout 9m sudo bash -c "apt-get -qq update && apt-get install -y $pkgs" && break
+            if [ "$attempt" = 3 ]; then echo "apt-get failed after 3 attempts"; exit 1; fi
+            echo "apt-get attempt $attempt failed; retrying in 30s"; sleep 30
+          done
       - name: Display Conda Environment Versions
         shell: bash -l {0}
         run: conda list