diff --git a/.devcontainer/.gitignore b/.devcontainer/.gitignore
index 5db8eff..63f880a 100644
--- a/.devcontainer/.gitignore
+++ b/.devcontainer/.gitignore
@@ -1,6 +1,5 @@
 *
 
-!/debian-*/
 !/conf/
 !/conf/shell/
 !/conf/shell/etc/
@@ -8,14 +7,15 @@
 !/conf/shell/var/
 !/conf/shell/var/tmp/
 !/conf/shell/var/tmp/snippets/
+!/debian-*/
 !/scripts/
 !/scripts/usr/
 !/scripts/usr/local/
 !/scripts/usr/local/bin/
 
-!/debian-*/devcontainer.json
 !/conf/shell/etc/skel/.profile
 !/conf/shell/var/tmp/snippets/*.sh
+!/debian-*/devcontainer.json
 !/scripts/usr/local/bin/*.sh
 
 !/.gitignore
diff --git a/.devcontainer/Debian.Dockerfile b/.devcontainer/Debian.Dockerfile
index 0317f0f..e8c0cd5 100644
--- a/.devcontainer/Debian.Dockerfile
+++ b/.devcontainer/Debian.Dockerfile
@@ -26,12 +26,14 @@ ARG DEBIAN_FRONTEND=noninteractive
 
 ARG COMPILER
 ARG COMPILER_VERSION
+ARG CXX_STDLIB
 
 # hadolint ignore=DL3008,SC2086
-RUN apt-get update \
+RUN CXX_STDLIB_VERSION=${CXX_STDLIB:+$COMPILER_VERSION} \
+  && apt-get update \
   && apt-get install -y --no-install-recommends \
     dpkg-dev \
-    g++ \
+    "${CXX_STDLIB:-g++}${CXX_STDLIB_VERSION:+-}${CXX_STDLIB_VERSION}${CXX_STDLIB:+-dev}" \
     libc6-dev \
     make \
     ca-certificates \
@@ -108,11 +110,12 @@ RUN if [ "$R_VERSION" = "devel" ]; then \
     R_SRC="base/R-${R_VERSION%%.*}/R-${R_VERSION}.tar.gz"; \
   fi \
   && cd /tmp \
-  && wget --progress=dot:giga https://cran.r-project.org/src/${R_SRC} -O "R.tar.gz" \
+  && wget --progress=dot:mega https://cran.r-project.org/src/${R_SRC} -O "R.tar.gz" \
   && tar zxf R.tar.gz --no-same-owner \
   && cd R-* \
-  && export ${COMPILER:+CC=${COMPILER}${COMPILER_VERSION:+-}${COMPILER_VERSION}} \
-  && export ${COMPILER:+CXX=${COMPILER}++${COMPILER_VERSION:+-}${COMPILER_VERSION}} \
+  && export ${COMPILER:+CC="${COMPILER}${COMPILER_VERSION:+-}${COMPILER_VERSION}"} \
+  && export ${COMPILER:+CXX="${COMPILER}++${COMPILER_VERSION:+-}${COMPILER_VERSION}"} \
+  && export ${CXX_STDLIB:+CXX="$CXX -stdlib=${CXX_STDLIB}"} \
   && R_PAPERSIZE=letter \
   && R_BROWSER=xdg-open \
   && PAGER=/usr/bin/pager \
@@ -138,6 +141,7 @@ ARG BASE_IMAGE_TAG
 ARG BLAS=libopenblas-dev
 ARG COMPILER
 ARG COMPILER_VERSION
+ARG CXX_STDLIB
 ARG CRAN
 
 ENV BASE_IMAGE=${BASE_IMAGE}:${BASE_IMAGE_TAG} \
@@ -159,14 +163,16 @@ RUN apt-get update \
   && apt-get remove -y --purge devscripts \
   && apt-get autoremove -y \
   ## Install R runtime dependencies
+  && CXX_STDLIB_VERSION=${CXX_STDLIB:+$COMPILER_VERSION} \
   && apt-get install -y --no-install-recommends \
     dpkg-dev \
-    g++ \
+    "${CXX_STDLIB:-g++}${CXX_STDLIB_VERSION:+-}${CXX_STDLIB_VERSION}${CXX_STDLIB:+-dev}" \
     libc6-dev \
     make \
     ca-certificates \
     "${COMPILER:-gcc}${COMPILER_VERSION:+-}${COMPILER_VERSION}" \
     gfortran \
+    "${CXX_STDLIB}${CXX_STDLIB:+abi}${CXX_STDLIB_VERSION:+-}${CXX_STDLIB_VERSION}${CXX_STDLIB:+-dev}" \
     libbz2-dev \
     '^libcurl[3|4]$' \
     libicu-dev \
diff --git a/.devcontainer/debian-stable-clang-libcpp/devcontainer.json b/.devcontainer/debian-stable-clang-libcpp/devcontainer.json
new file mode 100644
index 0000000..235ea46
--- /dev/null
+++ b/.devcontainer/debian-stable-clang-libcpp/devcontainer.json
@@ -0,0 +1,80 @@
+{
+  "name": "R devel (Debian stable, Clang, libc++)",
+  "build": {
+    "dockerfile": "../Debian.Dockerfile",
+    "context": "..",
+    "args": {
+      "BASE_IMAGE": "debian",
+      "BASE_IMAGE_TAG": "stable",
+      "COMPILER": "clang",
+      "CXX_STDLIB": "libc++",
+      "CRAN": "https://cloud.r-project.org",
+      "R_VERSION": "devel",
+      // "NCPUS": "1",
+      "USE_ZSH_FOR_ROOT": "unset-to-use-bash",
+      "SET_LANG": "en_US.UTF-8",
+      "SET_TZ": "Etc/UTC"
+    }
+  },
+
+  "onCreateCommand": "onCreateCommand.sh",
+  "postCreateCommand": "postCreateCommand.sh",
+  "postStartCommand": "postStartCommand.sh",
+
+  "features": {
+    "ghcr.io/devcontainers/features/common-utils:2": {
+      "configureZshAsDefaultShell": true,
+      "upgradePackages": false,
+      "username": "vscode",
+      "userUid": "automatic",
+      "userGid": "automatic"
+    },
+    // A comma separated list of packages to install
+    "ghcr.io/rocker-org/devcontainer-features/apt-packages:1": {
+      "packages": "qpdf"
+    }
+  },
+
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "DavidAnson.vscode-markdownlint",
+        "eamodio.gitlens@11.7.0",
+        "editorconfig.editorconfig",
+        "GitHub.vscode-pull-request-github",
+        "grapecity.gc-excelviewer",
+        "mhutchie.git-graph",
+        "mutantdino.resourcemonitor",
+        "redhat.vscode-yaml",
+        "REditorSupport.r",
+        "timonwong.shellcheck",
+        "exiasr.hadolint",
+        "ms-vscode.cpptools"
+      ],
+      "settings": {
+        "gitlens.showWelcomeOnInstall": false,
+        "gitlens.showWhatsNewAfterUpgrades": false,
+        "r.bracketedPaste": true,
+        "r.plot.useHttpgd": true,
+        "r.rterm.linux": "/usr/local/bin/radian",
+        "r.rterm.option": [
+          "--no-save",
+          "--no-restore"
+        ],
+        "r.workspaceViewer.showObjectSize": true,
+        "resmon.show.battery": false,
+        "resmon.show.cpufreq": false
+      }
+    }
+  },
+
+  // Set 'remoteUser' to 'root' to connect as root instead.
+  "remoteUser": "vscode",
+
+  "remoteEnv": {
+    // Pip: Install packages to the user site
+    "PIP_USER": "1",
+    // A comma separated list of packages to install
+    "R_PACKAGES": "future"
+  }
+}
diff --git a/.devcontainer/debian-stable-clang/devcontainer.json b/.devcontainer/debian-stable-clang/devcontainer.json
index 68ba46f..7e4f411 100644
--- a/.devcontainer/debian-stable-clang/devcontainer.json
+++ b/.devcontainer/debian-stable-clang/devcontainer.json
@@ -48,7 +48,6 @@
         "REditorSupport.r",
         "timonwong.shellcheck",
         "exiasr.hadolint",
-        "ms-azuretools.vscode-docker",
         "ms-vscode.cpptools"
       ],
       "settings": {
diff --git a/.devcontainer/debian-stable-gcc/devcontainer.json b/.devcontainer/debian-stable-gcc/devcontainer.json
index 661e9a8..c5787b5 100644
--- a/.devcontainer/debian-stable-gcc/devcontainer.json
+++ b/.devcontainer/debian-stable-gcc/devcontainer.json
@@ -47,7 +47,6 @@
         "REditorSupport.r",
         "timonwong.shellcheck",
         "exiasr.hadolint",
-        "ms-azuretools.vscode-docker",
         "ms-vscode.cpptools"
       ],
       "settings": {
diff --git a/.devcontainer/debian-testing-clang-libcpp/devcontainer.json b/.devcontainer/debian-testing-clang-libcpp/devcontainer.json
new file mode 100644
index 0000000..12bc73a
--- /dev/null
+++ b/.devcontainer/debian-testing-clang-libcpp/devcontainer.json
@@ -0,0 +1,80 @@
+{
+  "name": "R devel (Debian testing, Clang, libc++)",
+  "build": {
+    "dockerfile": "../Debian.Dockerfile",
+    "context": "..",
+    "args": {
+      "BASE_IMAGE": "debian",
+      "BASE_IMAGE_TAG": "testing",
+      "COMPILER": "clang",
+      "CXX_STDLIB": "libc++",
+      "CRAN": "https://cloud.r-project.org",
+      "R_VERSION": "devel",
+      // "NCPUS": "1",
+      "USE_ZSH_FOR_ROOT": "unset-to-use-bash",
+      "SET_LANG": "en_US.UTF-8",
+      "SET_TZ": "Etc/UTC"
+    }
+  },
+
+  "onCreateCommand": "onCreateCommand.sh",
+  "postCreateCommand": "postCreateCommand.sh",
+  "postStartCommand": "postStartCommand.sh",
+
+  "features": {
+    "ghcr.io/devcontainers/features/common-utils:2": {
+      "configureZshAsDefaultShell": true,
+      "upgradePackages": false,
+      "username": "vscode",
+      "userUid": "automatic",
+      "userGid": "automatic"
+    },
+    // A comma separated list of packages to install
+    "ghcr.io/rocker-org/devcontainer-features/apt-packages:1": {
+      "packages": "qpdf"
+    }
+  },
+
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "DavidAnson.vscode-markdownlint",
+        "eamodio.gitlens@11.7.0",
+        "editorconfig.editorconfig",
+        "GitHub.vscode-pull-request-github",
+        "grapecity.gc-excelviewer",
+        "mhutchie.git-graph",
+        "mutantdino.resourcemonitor",
+        "redhat.vscode-yaml",
+        "REditorSupport.r",
+        "timonwong.shellcheck",
+        "exiasr.hadolint",
+        "ms-vscode.cpptools"
+      ],
+      "settings": {
+        "gitlens.showWelcomeOnInstall": false,
+        "gitlens.showWhatsNewAfterUpgrades": false,
+        "r.bracketedPaste": true,
+        "r.plot.useHttpgd": true,
+        "r.rterm.linux": "/usr/local/bin/radian",
+        "r.rterm.option": [
+          "--no-save",
+          "--no-restore"
+        ],
+        "r.workspaceViewer.showObjectSize": true,
+        "resmon.show.battery": false,
+        "resmon.show.cpufreq": false
+      }
+    }
+  },
+
+  // Set 'remoteUser' to 'root' to connect as root instead.
+  "remoteUser": "vscode",
+
+  "remoteEnv": {
+    // Pip: Install packages to the user site
+    "PIP_USER": "1",
+    // A comma separated list of packages to install
+    "R_PACKAGES": "future"
+  }
+}
diff --git a/.devcontainer/debian-testing-clang/devcontainer.json b/.devcontainer/debian-testing-clang/devcontainer.json
index 26adfaf..7954c23 100644
--- a/.devcontainer/debian-testing-clang/devcontainer.json
+++ b/.devcontainer/debian-testing-clang/devcontainer.json
@@ -48,7 +48,6 @@
         "REditorSupport.r",
         "timonwong.shellcheck",
         "exiasr.hadolint",
-        "ms-azuretools.vscode-docker",
         "ms-vscode.cpptools"
       ],
       "settings": {
diff --git a/.devcontainer/debian-testing-gcc/devcontainer.json b/.devcontainer/debian-testing-gcc/devcontainer.json
index e973cd1..7fa5b3d 100644
--- a/.devcontainer/debian-testing-gcc/devcontainer.json
+++ b/.devcontainer/debian-testing-gcc/devcontainer.json
@@ -47,7 +47,6 @@
         "REditorSupport.r",
         "timonwong.shellcheck",
         "exiasr.hadolint",
-        "ms-azuretools.vscode-docker",
         "ms-vscode.cpptools"
       ],
       "settings": {
diff --git a/.devcontainer/debian-unstable-clang-18-libcpp/devcontainer.json b/.devcontainer/debian-unstable-clang-18-libcpp/devcontainer.json
new file mode 100644
index 0000000..e4db724
--- /dev/null
+++ b/.devcontainer/debian-unstable-clang-18-libcpp/devcontainer.json
@@ -0,0 +1,82 @@
+{
+  "name": "R devel (Debian unstable, Clang 18, libc++)",
+  "build": {
+    "dockerfile": "../Debian.Dockerfile",
+    "context": "..",
+    "args": {
+      "BASE_IMAGE": "debian",
+      "BASE_IMAGE_TAG": "unstable",
+      "COMPILER": "clang",
+      "COMPILER_VERSION": "18",
+      "CXX_STDLIB": "libc++",
+      "CRAN": "https://cloud.r-project.org",
+      "R_VERSION": "devel",
+      // "NCPUS": "1",
+      "INSTALL_COMMON_UTILS": "true",
+      "USE_ZSH_FOR_ROOT": "unset-to-use-bash",
+      "SET_LANG": "en_US.UTF-8",
+      "SET_TZ": "Etc/UTC"
+    }
+  },
+
+  "onCreateCommand": "onCreateCommand.sh",
+  "postCreateCommand": "postCreateCommand.sh",
+  "postStartCommand": "postStartCommand.sh",
+
+  "features": {
+    "ghcr.io/devcontainers/features/common-utils:2": {
+      "configureZshAsDefaultShell": true,
+      "upgradePackages": false,
+      "username": "vscode",
+      "userUid": "automatic",
+      "userGid": "automatic"
+    },
+    // A comma separated list of packages to install
+    "ghcr.io/rocker-org/devcontainer-features/apt-packages:1": {
+      "packages": "qpdf"
+    }
+  },
+
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "DavidAnson.vscode-markdownlint",
+        "eamodio.gitlens@11.7.0",
+        "editorconfig.editorconfig",
+        "GitHub.vscode-pull-request-github",
+        "grapecity.gc-excelviewer",
+        "mhutchie.git-graph",
+        "mutantdino.resourcemonitor",
+        "redhat.vscode-yaml",
+        "REditorSupport.r",
+        "timonwong.shellcheck",
+        "exiasr.hadolint",
+        "ms-vscode.cpptools"
+      ],
+      "settings": {
+        "gitlens.showWelcomeOnInstall": false,
+        "gitlens.showWhatsNewAfterUpgrades": false,
+        "r.bracketedPaste": true,
+        "r.plot.useHttpgd": true,
+        "r.rterm.linux": "/usr/local/bin/radian",
+        "r.rterm.option": [
+          "--no-save",
+          "--no-restore"
+        ],
+        "r.workspaceViewer.showObjectSize": true,
+        "resmon.show.battery": false,
+        "resmon.show.cpufreq": false
+      }
+    }
+  },
+
+  // Set 'remoteUser' to 'root' to connect as root instead.
+  "remoteUser": "vscode",
+
+  "remoteEnv": {
+    // Pip: Install packages to the user site
+    "PIP_USER": "1",
+    // A comma separated list of packages to install
+    "R_PACKAGES": "future"
+  }
+}
diff --git a/.devcontainer/debian-unstable-clang-18/devcontainer.json b/.devcontainer/debian-unstable-clang-18/devcontainer.json
index 362df9b..7adde5a 100644
--- a/.devcontainer/debian-unstable-clang-18/devcontainer.json
+++ b/.devcontainer/debian-unstable-clang-18/devcontainer.json
@@ -50,7 +50,6 @@
         "REditorSupport.r",
         "timonwong.shellcheck",
         "exiasr.hadolint",
-        "ms-azuretools.vscode-docker",
         "ms-vscode.cpptools"
       ],
       "settings": {
diff --git a/.devcontainer/debian-unstable-clang-libcpp/devcontainer.json b/.devcontainer/debian-unstable-clang-libcpp/devcontainer.json
new file mode 100644
index 0000000..0b266ee
--- /dev/null
+++ b/.devcontainer/debian-unstable-clang-libcpp/devcontainer.json
@@ -0,0 +1,81 @@
+{
+  "name": "R devel (Debian unstable, Clang, libc++)",
+  "build": {
+    "dockerfile": "../Debian.Dockerfile",
+    "context": "..",
+    "args": {
+      "BASE_IMAGE": "debian",
+      "BASE_IMAGE_TAG": "unstable",
+      "COMPILER": "clang",
+      "CXX_STDLIB": "libc++",
+      "CRAN": "https://cloud.r-project.org",
+      "R_VERSION": "devel",
+      // "NCPUS": "1",
+      "INSTALL_COMMON_UTILS": "true",
+      "USE_ZSH_FOR_ROOT": "unset-to-use-bash",
+      "SET_LANG": "en_US.UTF-8",
+      "SET_TZ": "Etc/UTC"
+    }
+  },
+
+  "onCreateCommand": "onCreateCommand.sh",
+  "postCreateCommand": "postCreateCommand.sh",
+  "postStartCommand": "postStartCommand.sh",
+
+  "features": {
+    "ghcr.io/devcontainers/features/common-utils:2": {
+      "configureZshAsDefaultShell": true,
+      "upgradePackages": false,
+      "username": "vscode",
+      "userUid": "automatic",
+      "userGid": "automatic"
+    },
+    // A comma separated list of packages to install
+    "ghcr.io/rocker-org/devcontainer-features/apt-packages:1": {
+      "packages": "qpdf"
+    }
+  },
+
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "DavidAnson.vscode-markdownlint",
+        "eamodio.gitlens@11.7.0",
+        "editorconfig.editorconfig",
+        "GitHub.vscode-pull-request-github",
+        "grapecity.gc-excelviewer",
+        "mhutchie.git-graph",
+        "mutantdino.resourcemonitor",
+        "redhat.vscode-yaml",
+        "REditorSupport.r",
+        "timonwong.shellcheck",
+        "exiasr.hadolint",
+        "ms-vscode.cpptools"
+      ],
+      "settings": {
+        "gitlens.showWelcomeOnInstall": false,
+        "gitlens.showWhatsNewAfterUpgrades": false,
+        "r.bracketedPaste": true,
+        "r.plot.useHttpgd": true,
+        "r.rterm.linux": "/usr/local/bin/radian",
+        "r.rterm.option": [
+          "--no-save",
+          "--no-restore"
+        ],
+        "r.workspaceViewer.showObjectSize": true,
+        "resmon.show.battery": false,
+        "resmon.show.cpufreq": false
+      }
+    }
+  },
+
+  // Set 'remoteUser' to 'root' to connect as root instead.
+  "remoteUser": "vscode",
+
+  "remoteEnv": {
+    // Pip: Install packages to the user site
+    "PIP_USER": "1",
+    // A comma separated list of packages to install
+    "R_PACKAGES": "future"
+  }
+}
diff --git a/.devcontainer/debian-unstable-clang/devcontainer.json b/.devcontainer/debian-unstable-clang/devcontainer.json
index e9168d4..d20bce9 100644
--- a/.devcontainer/debian-unstable-clang/devcontainer.json
+++ b/.devcontainer/debian-unstable-clang/devcontainer.json
@@ -49,7 +49,6 @@
         "REditorSupport.r",
         "timonwong.shellcheck",
         "exiasr.hadolint",
-        "ms-azuretools.vscode-docker",
         "ms-vscode.cpptools"
       ],
       "settings": {
diff --git a/.devcontainer/debian-unstable-gcc/devcontainer.json b/.devcontainer/debian-unstable-gcc/devcontainer.json
index 9f9ea49..08baeed 100644
--- a/.devcontainer/debian-unstable-gcc/devcontainer.json
+++ b/.devcontainer/debian-unstable-gcc/devcontainer.json
@@ -48,7 +48,6 @@
         "REditorSupport.r",
         "timonwong.shellcheck",
         "exiasr.hadolint",
-        "ms-azuretools.vscode-docker",
         "ms-vscode.cpptools"
       ],
       "settings": {