Install Kerberos deps when testing wheels

.github/workflows/install-krb5.sh

@@ -2,9 +2,31 @@
 
 set -Eexuo pipefail
 
-if [ "$RUNNER_OS" == "Linux" ]; then
-    # Assume Ubuntu since this is the only Linux used in CI.
-    sudo apt-get update
-    sudo apt-get install -y --no-install-recommends \
-        libkrb5-dev krb5-user krb5-kdc krb5-admin-server
+if [[ $OSTYPE == linux* ]]; then
+    if [ -e /etc/os-release ]; then
+        source /etc/os-release
+    elif [ -e /etc/centos-release ]; then
+        ID="centos"
+        VERSION_ID=$(cat /etc/centos-release | cut -f3 -d' ' | cut -f1 -d.)
+    else
+        echo "install-postgres.sh: cannot determine which Linux distro this is" >&2
+        exit 1
+    fi
+
+    if [ "${ID}" = "debian" -o "${ID}" = "ubuntu" ]; then
+        export DEBIAN_FRONTEND=noninteractive
+
+        sudo apt-get update
+        sudo apt-get install -y --no-install-recommends \
+            libkrb5-dev krb5-user krb5-kdc krb5-admin-server
+    elif [ "${ID}" = "almalinux" ]; then
+        sudo dnf install -y krb5-server krb5-libs
+    elif [ "${ID}" = "centos" ]; then
+        sudo yum install -y krb5-server krb5-libs
+    elif [ "${ID}" = "alpine" ]; then
+        sudo apk add krb5 krb5-server
+    else
+        echo "install-postgres.sh: Unsupported distro: ${distro}" >&2
+        exit 1
+    fi
 fi

pyproject.toml

@@ -81,7 +81,10 @@ test-command = "python {project}/tests/__init__.py"
 test-command = "python {project}\\tests\\__init__.py"
 
 [tool.cibuildwheel.linux]
-before-all = ".github/workflows/install-postgres.sh"
+before-all = """
+    .github/workflows/install-postgres.sh \
+    && .github/workflows/install-krb5.sh \
+    """
 test-command = """\
     PY=`which python` \
     && chmod -R go+rX "$(dirname $(dirname $(dirname $PY)))" \