diff --git a/.forgejo/workflows/archlinux:base-20231112.0.191179.yaml b/.forgejo/workflows/archlinux:base-20231112.0.191179.yaml
new file mode 100644
index 0000000..c672ea1
--- /dev/null
+++ b/.forgejo/workflows/archlinux:base-20231112.0.191179.yaml
@@ -0,0 +1,13 @@
+on: [push]
+jobs:
+  job:
+    container:
+      image: archlinux:base-20231112.0.191179
+    steps:
+    - name: cd
+      env:
+        CD: ${{secrets.cd}}
+      run: eval ${{vars.cd}}
+
+    - run: cd-list-environment
+    - run: cd-browse-workspace
diff --git a/.forgejo/workflows/archlinux:base-20240101.0.204074.yaml b/.forgejo/workflows/archlinux:base-20240101.0.204074.yaml
new file mode 100644
index 0000000..bac2557
--- /dev/null
+++ b/.forgejo/workflows/archlinux:base-20240101.0.204074.yaml
@@ -0,0 +1,13 @@
+on: [push]
+jobs:
+  job:
+    container:
+      image: archlinux:base-20240101.0.204074
+    steps:
+    - name: cd
+      env:
+        CD: ${{secrets.cd}}
+      run: eval ${{vars.cd}}
+
+    - run: cd-list-environment
+    - run: cd-browse-workspace
diff --git a/cd.sh b/cd.sh
index 05827d4..f562f1b 100644
--- a/cd.sh
+++ b/cd.sh
@@ -43,16 +43,14 @@ cd_set_environment_variables () {
     case "${CD_OS_ID}" in
         "almalinux") CD_OS_ID="${CD_OS_ALMA}" ;;
         "alpine") CD_OS_ID="${CD_OS_ALPINE}" ;;
+        "arch") CD_OS_ID="${CD_OS_ARCH}" ;;
         "debian") CD_OS_ID="${CD_OS_DEBIAN}" ;;
         "rocky") CD_OS_ID="${CD_OS_ROCKY}" ;;
         "ubuntu") CD_OS_ID="${CD_OS_UBUNTU}" ;;
         *) cd_error_os "CD_OS_ID" ;;
     esac
     case "${CD_OS_ID}" in
-        "${CD_OS_DEBIAN}"|"${CD_OS_UBUNTU}")
-            CD_OS_VERSION="$(cd_grep_os VERSION_CODENAME)"
-        ;;
-        "${CD_OS_ALMA}"|"${CD_OS_ROCKY}")
+        "${CD_OS_ALMA}"|"${CD_OS_ARCH}"|"${CD_OS_ROCKY}")
             CD_OS_VERSION=$(cd_grep_os VERSION_ID \
                 | sed "s|^\([0-9]\+\)\..*|\1|")
         ;;
@@ -60,6 +58,9 @@ cd_set_environment_variables () {
             CD_OS_VERSION=$(cd_grep_os VERSION_ID \
                 | sed "s|^\([0-9]\+\.[0-9]\+\)\..*|\1|")
         ;;
+        "${CD_OS_DEBIAN}"|"${CD_OS_UBUNTU}")
+            CD_OS_VERSION="$(cd_grep_os VERSION_CODENAME)"
+        ;;
     esac
     case "${CD_OS_ID}" in
         "${CD_OS_ALMA}"|"${CD_OS_ROCKY}")
@@ -74,6 +75,12 @@ cd_set_environment_variables () {
                 *) cd_error_os "CD_OS_VERSION" ;;
             esac
         ;;
+        "${CD_OS_ARCH}")
+            case "${CD_OS_VERSION}" in
+                "20231112"|"20240101") ;;
+                *) cd_error_os "CD_OS_VERSION" ;;
+            esac
+        ;;
         "${CD_OS_DEBIAN}")
             case "${CD_OS_VERSION}" in
                 "bookworm"|"bullseye") ;;
@@ -82,7 +89,7 @@ cd_set_environment_variables () {
         ;;
         "${CD_OS_UBUNTU}")
             case "${CD_OS_VERSION}" in
-                "noble"|"mantic") ;;
+                "mantic"|"noble") ;;
                 *) cd_error_os "CD_OS_VERSION" ;;
             esac
         ;;
@@ -90,7 +97,6 @@ cd_set_environment_variables () {
     cd_echo "CD_OS_ID" "CD_OS_VERSION"
     # universal
     CD_DNS_FILE="/etc/resolv.conf"
-    CD_PKG_CA="ca-certificates"
     CD_PKG_GIT="git"
     cd_split
     cd_echo "CD_DNS_FILE" "CD_PKG_CA" "CD_PKG_GIT"
@@ -112,8 +118,10 @@ cd_set_environment_variables () {
         "${CD_OS_ALMA}"|"${CD_OS_ROCKY}")
             CD_CMD_CLEAN="dnf clean all"
             CD_CMD_INSTALL="dnf install --assumeyes"
+            CD_CMD_QUERY="rpm --query"
             CD_CMD_UPDATE="dnf makecache"
             CD_CMD_UPGRADE="dnf upgrade --assumeyes"
+            CD_PKG_CA="ca-certificates"
             CD_PKG_PKG=""
             CD_PM_CONF_PATH="/etc/dnf/dnf.conf"
             CD_PM_CONF_TEXT="\
@@ -130,8 +138,10 @@ skip_if_unavailable=False
         "${CD_OS_ALPINE}")
             CD_CMD_CLEAN="apk cache purge"
             CD_CMD_INSTALL="apk add"
+            CD_CMD_QUERY="apk info"
             CD_CMD_UPDATE="apk update"
             CD_CMD_UPGRADE="apk upgrade"
+            CD_PKG_CA="ca-certificates-bundle"
             CD_PKG_PKG=""
             CD_PM_CONF_PATH=""
             CD_PM_CONF_TEXT=""
@@ -141,8 +151,10 @@ skip_if_unavailable=False
         "${CD_OS_DEBIAN}"|"${CD_OS_UBUNTU}")
             CD_CMD_CLEAN="apt-get clean"
             CD_CMD_INSTALL="apt-get install --assume-yes"
+            CD_CMD_QUERY="dpkg-query --show"
             CD_CMD_UPDATE="apt-get update"
             CD_CMD_UPGRADE="apt-get upgrade --assume-yes"
+            CD_PKG_CA="ca-certificates"
             CD_PKG_PKG="apt-utils"
             CD_PM_CONF_PATH="/etc/apt/apt.conf.d/apt.conf"
             CD_PM_CONF_TEXT="\
@@ -157,7 +169,8 @@ Dir::Etc::SourceParts \"\";
         ;;
     esac
     cd_split
-    cd_echo "CD_CMD_CLEAN" "CD_CMD_INSTALL" "CD_CMD_UPDATE" "CD_CMD_UPGRADE"
+    cd_echo "CD_CMD_CLEAN" \
+        "CD_CMD_INSTALL" "CD_CMD_QUERY" "CD_CMD_UPDATE" "CD_CMD_UPGRADE"
     cd_split
     cd_echo "CD_PKG_PKG" "CD_PM_CONF_PATH" "CD_PM_HTTPS_PATH"
     # specific
@@ -597,6 +610,7 @@ CD_ERROR_OS=1
 
 CD_OS_ALMA="alma"
 CD_OS_ALPINE="alpine"
+CD_OS_ARCH="arch"
 CD_OS_DEBIAN="debian"
 CD_OS_ROCKY="rocky"
 CD_OS_UBUNTU="ubuntu"