diff --git a/readme.md b/readme.md
index f52cdc3..c028469 100644
--- a/readme.md
+++ b/readme.md
@@ -221,6 +221,7 @@ Handle project workflows in a unified way:
 
 #### Shell
 
+* command to echo & run
 * comment
 * handle errors
 * packages
@@ -235,7 +236,10 @@ Handle project workflows in a unified way:
       * opensuse
     * opensuse
       * disable & enable https
-* persist locales
+* locales
+  * persist
+  * restrict LC_* variables set for alpine
+  * test LC_* variables
 * test
 
 #### Shell → Python
diff --git a/spcd/bootstrap.sh b/spcd/bootstrap.sh
index 3b510f8..c7dd25d 100644
--- a/spcd/bootstrap.sh
+++ b/spcd/bootstrap.sh
@@ -377,81 +377,6 @@ spcd_txt_get() {
     esac
 }
 
-spcd_txt_locale() {
-    locale
-    spcd_split
-    local value name
-    if [ -n "${1}" ]; then
-        value="${1}"
-    else
-        value="${_SPCD_TXT_LOCALE_DEFAULT}"
-    fi
-    value="${value}.${_SPCD_TXT_CHARSET}"
-    set -- \
-        "LANG" \
-        "LC_CTYPE" \
-        "LC_NUMERIC" \
-        "LC_TIME" \
-        "LC_COLLATE" \
-        "LC_MONETARY" \
-        "LC_MESSAGES" \
-        "LC_PAPER" \
-        "LC_NAME" \
-        "LC_ADDRESS" \
-        "LC_TELEPHONE" \
-        "LC_MEASUREMENT" \
-        "LC_IDENTIFICATION"
-    for name in "${@}"; do
-        export "${name}=${value}"
-    done
-    spcd_split
-    locale
-}
-
-spcd_txt_locales_echo() {
-    case "${1}" in
-    "LANGUAGE") spcd_os_printenv "LANGUAGE" ;;
-    *) locale -a ;;
-    esac
-}
-
-spcd_txt_locales() {
-    set -- \
-        "${SPCD_TXT_LOCALE_ENGLISH}" \
-        "${SPCD_TXT_LOCALE_FRENCH}"
-    local language locale text
-    spcd_txt_locales_echo
-    spcd_split
-    for locale in "${@}"; do
-        case "${1}" in
-        "glibc-langpack-")
-            language="$(echo "${locale}" | cut -d _ -f 1)"
-            spcd_install_package "glibc-langpack-${language}"
-            ;;
-        "LANGUAGE")
-            if [ -n "${text}" ]; then
-                text="${text}:${locale}"
-            else
-                text="${locale}"
-            fi
-            ;;
-        "locale.gen")
-            text="${text}\
-${locale}.${_SPCD_TXT_CHARSET} ${_SPCD_TXT_CHARSET}
-"
-            ;;
-        *) ;;
-        esac
-    done
-    case "${1}" in
-    "LANGUAGE") export LANGUAGE="${text}" ;;
-    "locale.gen") spcd_os_write "/etc/locale.gen" "${text}" ;;
-    *) ;;
-    esac
-    spcd_split
-    spcd_txt_locales_echo
-}
-
 # ╭──────╮
 # │ step │
 # ╰──────╯
@@ -479,7 +404,7 @@ SPCD_PM_ZYPPER="zypper"
 # │ step │ environment │
 # ╰──────┴─────────────╯
 
-spcd_step__environment_defaults_print() {
+spcd_step__environment_print() {
     spcd_ca "list"
     spcd_dns "list"
     set -- \
@@ -936,6 +861,128 @@ spcd_query_package() {
     esac
 }
 
+spcd_txt_locale() {
+    local action="${1}"
+    local chosen="${2}"
+    set -- \
+        "LANG" \
+        "LC_CTYPE" \
+        "LC_NUMERIC" \
+        "LC_TIME" \
+        "LC_COLLATE" \
+        "LC_MONETARY" \
+        "LC_MESSAGES"
+    case "${SPCD_OS_ID}" in
+    "${SPCD_OS_ALPINE}") ;;
+    *)
+        set -- \
+            "${@}" \
+            "LANGUAGE" \
+            "LC_PAPER" \
+            "LC_NAME" \
+            "LC_ADDRESS" \
+            "LC_TELEPHONE" \
+            "LC_MEASUREMENT" \
+            "LC_IDENTIFICATION"
+        ;;
+    esac
+    local name
+    case "${action}" in
+    "list")
+        if ! locale; then
+            for name in "${@}"; do
+                spcd_os_printenv "${name}"
+            done
+        fi
+        ;;
+    "set")
+        spcd_txt_locale "list"
+        spcd_split
+        local locale long
+        if [ -n "${chosen}" ]; then
+            locale="${chosen}"
+        else
+            locale="${_SPCD_TXT_LOCALE_DEFAULT}"
+        fi
+        long="${locale}.${_SPCD_TXT_CHARSET}"
+        for name in "${@}"; do
+            if [ "${name}" != "LANGUAGE" ]; then
+                export "${name}=${long}"
+            else
+                export "${name}=$(spcd_txt_locales language "${chosen}")"
+            fi
+        done
+        spcd_split
+        spcd_txt_locale "list"
+        ;;
+    *) ;;
+    esac
+}
+
+spcd_txt_locales() {
+    local action="${1}"
+    local chosen="${2}"
+    set -- \
+        "${SPCD_TXT_LOCALE_ENGLISH}" \
+        "${SPCD_TXT_LOCALE_FRENCH}"
+    local name
+    case "${action}" in
+    "install")
+        spcd_txt_locales "list"
+        spcd_split
+        case "${SPCD_PM}" in
+        "${SPCD_PM_APK}")
+            spcd_install_package "musl-locales"
+            export MUSL_LOCPATH="/usr/share/i18n/locales/musl"
+            ;;
+        "${SPCD_PM_APT}")
+            local text
+            for name in "${@}"; do
+                text="${text}\
+${name}.${_SPCD_TXT_CHARSET} ${_SPCD_TXT_CHARSET}
+"
+            done
+            spcd_os_write "/etc/locale.gen" "${text}"
+            spcd_install_package "locales"
+            ;;
+        "${SPCD_PM_DNF}")
+            local language
+            for name in "${@}"; do
+                language="$(echo "${name}" | cut -d _ -f 1)"
+                spcd_install_package "glibc-langpack-${language}"
+            done
+            ;;
+        "${SPCD_PM_PACMAN}") spcd_install_package "glibc-locales" ;;
+        "${SPCD_PM_ZYPPER}") spcd_install_package "glibc-locale" ;;
+        *) ;;
+        esac
+        spcd_split
+        spcd_txt_locales "list"
+        ;;
+    "language")
+        local text
+        if [ -n "${chosen}" ]; then
+            text="${chosen}"
+        fi
+        for name in "${@}"; do
+            if [ "${name}" != "${chosen}" ]; then
+                if [ -n "${text}" ]; then
+                    text="${text}:${name}"
+                else
+                    text="${name}"
+                fi
+            fi
+        done
+        ;;
+    "list")
+        if ! locale --all-locales; then
+            echo "No locales yet!"
+        fi
+        ;;
+    *) ;;
+    esac
+}
+
 # ╭──────┬─────╮
 # │ step │ dns │
 # ╰──────┴─────╯
@@ -1178,6 +1225,17 @@ spcd_step__packages_install_tools() {
     esac
 }
 
+spcd_step__packages_install_locales() {
+    spcd_step_in "Locales"
+    spcd_step "Install"
+    spcd_txt_locales "install"
+    spcd_step "Set"
+    spcd_txt_locale "set" "${SPCD_TXT_LOCALE}"
+    spcd_step "Test"
+    date
+    spcd_step_out
+}
+
 # ╭──────┬────╮
 # │ step │ ca │
 # ╰──────┴────╯
@@ -1241,25 +1299,6 @@ spcd_step__packages_verify_https() {
     fi
 }
 
-spcd_step__packages_install_locales() {
-    spcd_step "Install locales"
-    case "${SPCD_PM}" in
-    "${SPCD_PM_APK}") spcd_install_package "musl-locales" ;;
-    "${SPCD_PM_APT}")
-        spcd_txt_locales "locale.gen"
-        spcd_install_package "locales"
-        ;;
-    "${SPCD_PM_DNF}")
-        spcd_txt_locales "glibc-langpack-"
-        ;;
-    "${SPCD_PM_PACMAN}") spcd_install_package "glibc-locales" ;;
-    "${SPCD_PM_ZYPPER}") spcd_install_package "glibc-locale" ;;
-    *) ;;
-    esac
-    spcd_txt_locales "LANGUAGE"
-    spcd_txt_locale "${SPCD_TXT_LOCALE}"
-}
-
 spcd_step__packages_upgrade_system() {
     spcd_step "Upgrade system"
     case "${SPCD_PM}" in
@@ -1459,15 +1498,13 @@ ${SPCD_PYTHON_ALIAS} / ${name}"
 
 spcd_main() {
     # environment
-    spcd_txt_locale
-    #
     spcd_step_in "Environment"
     spcd_step_in "Defaults"
     spcd_step "Print defined"
-    spcd_step__environment_defaults_print
+    spcd_step__environment_print
     spcd_step__environment_defaults_set
     spcd_step "Print effective"
-    spcd_step__environment_defaults_print
+    spcd_step__environment_print
     spcd_step_out
     spcd_step__environment_set_variables
     spcd_step__environment_list_workspace
@@ -1481,6 +1518,7 @@ spcd_main() {
     spcd_step__packages_trust_https
     spcd_step__packages_update_catalog
     spcd_step__packages_install_tools
+    spcd_step__packages_install_locales
     spcd_step_out
     # ca
     spcd_step_in "CA"
@@ -1491,7 +1529,6 @@ spcd_main() {
     # packages
     spcd_step_in "Packages"
     spcd_step__packages_verify_https
-    spcd_step__packages_install_locales
     spcd_step__packages_update_catalog
     spcd_step__packages_upgrade_system
     spcd_step__packages_install_dos2unix