diff --git a/client/Dockerfiles/finance/archlinux/Dockerfile.hledger-flow.src.in b/client/Dockerfiles/finance/archlinux/Dockerfile.hledger-flow.src.in
index 6f988e8..31c73fe 100644
--- a/client/Dockerfiles/finance/archlinux/Dockerfile.hledger-flow.src.in
+++ b/client/Dockerfiles/finance/archlinux/Dockerfile.hledger-flow.src.in
@@ -22,7 +22,6 @@
 USER root
 
 RUN pacman -Syu \
-  ghc \
   stack \
   --noconfirm --disable-download-timeout
 
@@ -35,7 +34,6 @@ RUN git clone --depth=1 https://github.com/apauley/hledger-flow -b v0.15.0
 WORKDIR /usr/local/src/hledger-flow
 RUN stack setup
 RUN stack build
-RUN stack test --interleaved-output --pedantic
 RUN stack install --local-bin-path=/usr/local/bin
 
 # vim: sw=2 sts=2 si ai et
diff --git a/client/Dockerfiles/finance/archlinux/experimental/Dockerfile.hledger-flow.src.in b/client/Dockerfiles/finance/archlinux/experimental/Dockerfile.hledger-flow.src.in
new file mode 100644
index 0000000..8d52384
--- /dev/null
+++ b/client/Dockerfiles/finance/archlinux/experimental/Dockerfile.hledger-flow.src.in
@@ -0,0 +1,39 @@
+# docker-finance | modern accounting for the power-user
+#
+# Copyright (C) 2021-2024 Aaron Fiore (Founder, Evergreen Crypto LLC)
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+#
+# hledger-flow (source)
+#
+
+USER root
+
+RUN pacman -Syu \
+  stack \
+  --noconfirm --disable-download-timeout
+
+USER builder
+
+WORKDIR /usr/local/src
+RUN git clone https://github.com/apauley/hledger-flow -b master
+
+WORKDIR /usr/local/src/hledger-flow
+RUN stack setup
+RUN stack build
+RUN stack test --interleaved-output --pedantic
+RUN stack install --local-bin-path=/usr/local/bin
+
+# vim: sw=2 sts=2 si ai et
diff --git a/client/Dockerfiles/finance/archlinux/Dockerfile.hledger.src.in b/client/Dockerfiles/finance/archlinux/experimental/Dockerfile.hledger.src.in
similarity index 87%
rename from client/Dockerfiles/finance/archlinux/Dockerfile.hledger.src.in
rename to client/Dockerfiles/finance/archlinux/experimental/Dockerfile.hledger.src.in
index e69ddd5..decfa31 100644
--- a/client/Dockerfiles/finance/archlinux/Dockerfile.hledger.src.in
+++ b/client/Dockerfiles/finance/archlinux/experimental/Dockerfile.hledger.src.in
@@ -28,14 +28,9 @@ RUN pacman -Rsc \
   hledger-web \
   --noconfirm
 
-# Remove incompatible (need `ghc` via `stack`)
-RUN pacman -Rsc \
-  ghc \
-  --noconfirm
-
 USER builder
 WORKDIR /usr/local/src
-RUN git clone --depth=1 https://github.com/simonmichael/hledger
+RUN git clone https://github.com/simonmichael/hledger -b master
 
 WORKDIR /usr/local/src/hledger
 RUN stack update
diff --git a/client/Dockerfiles/finance/archlinux/experimental/Dockerfile.root.in b/client/Dockerfiles/finance/archlinux/experimental/Dockerfile.root.in
new file mode 100644
index 0000000..faaac1e
--- /dev/null
+++ b/client/Dockerfiles/finance/archlinux/experimental/Dockerfile.root.in
@@ -0,0 +1,43 @@
+# docker-finance | modern accounting for the power-user
+#
+# Copyright (C) 2021-2024 Aaron Fiore (Founder, Evergreen Crypto LLC)
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+#
+# ROOT.cern (and docker-finance requirements)
+#
+
+USER root
+
+# ROOT.cern
+RUN pacman -Syu \
+  root \
+  --noconfirm --disable-download-timeout
+
+# docker-finance
+RUN pacman -Syu \
+  benchmark \
+  botan2 \
+  crypto++ \
+  gtest \
+  libsodium \
+  --noconfirm --disable-download-timeout
+
+# docker-finance (experimental / testing)
+RUN pacman -Syu \
+  unuran \
+  --noconfirm --disable-download-timeout
+
+# vim: sw=2 sts=2 si ai et
diff --git a/client/Dockerfiles/finance/ubuntu/Dockerfile.hledger-flow.src.in b/client/Dockerfiles/finance/ubuntu/Dockerfile.hledger-flow.src.in
index 282f657..16de2af 100644
--- a/client/Dockerfiles/finance/ubuntu/Dockerfile.hledger-flow.src.in
+++ b/client/Dockerfiles/finance/ubuntu/Dockerfile.hledger-flow.src.in
@@ -22,7 +22,7 @@
 USER root
 
 RUN apt-get install -y \
-  ghc \
+  g++ \
   haskell-stack
 
 # TODO: upstream-integrate with hledger? packaged somewhere? would like to not have to clone and build here...
@@ -34,7 +34,6 @@ RUN git clone --depth=1 https://github.com/apauley/hledger-flow -b v0.15.0
 WORKDIR /usr/local/src/hledger-flow
 RUN stack setup
 RUN stack build
-RUN stack test --interleaved-output --pedantic
 RUN stack install --local-bin-path=/usr/local/bin
 
 # vim: sw=2 sts=2 si ai et
diff --git a/client/Dockerfiles/finance/ubuntu/experimental/Dockerfile.hledger-flow.src.in b/client/Dockerfiles/finance/ubuntu/experimental/Dockerfile.hledger-flow.src.in
new file mode 100644
index 0000000..0946261
--- /dev/null
+++ b/client/Dockerfiles/finance/ubuntu/experimental/Dockerfile.hledger-flow.src.in
@@ -0,0 +1,39 @@
+# docker-finance | modern accounting for the power-user
+#
+# Copyright (C) 2021-2024 Aaron Fiore (Founder, Evergreen Crypto LLC)
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+#
+# hledger-flow (source)
+#
+
+USER root
+
+RUN apt-get install -y \
+  g++ \
+  haskell-stack
+
+USER builder
+
+WORKDIR /usr/local/src
+RUN git clone https://github.com/apauley/hledger-flow -b master
+
+WORKDIR /usr/local/src/hledger-flow
+RUN stack setup
+RUN stack build
+RUN stack test --interleaved-output --pedantic
+RUN stack install --local-bin-path=/usr/local/bin
+
+# vim: sw=2 sts=2 si ai et
diff --git a/client/Dockerfiles/finance/ubuntu/Dockerfile.hledger.src.in b/client/Dockerfiles/finance/ubuntu/experimental/Dockerfile.hledger.src.in
similarity index 94%
rename from client/Dockerfiles/finance/ubuntu/Dockerfile.hledger.src.in
rename to client/Dockerfiles/finance/ubuntu/experimental/Dockerfile.hledger.src.in
index cc6fdb5..499ba3f 100644
--- a/client/Dockerfiles/finance/ubuntu/Dockerfile.hledger.src.in
+++ b/client/Dockerfiles/finance/ubuntu/experimental/Dockerfile.hledger.src.in
@@ -32,7 +32,7 @@ RUN apt-get install -y \
 
 USER builder
 WORKDIR /usr/local/src
-RUN git clone --depth=1 https://github.com/simonmichael/hledger
+RUN git clone https://github.com/simonmichael/hledger -b master
 
 WORKDIR /usr/local/src/hledger
 RUN stack update
diff --git a/client/Dockerfiles/finance/ubuntu/experimental/Dockerfile.root.in b/client/Dockerfiles/finance/ubuntu/experimental/Dockerfile.root.in
new file mode 100644
index 0000000..297fa15
--- /dev/null
+++ b/client/Dockerfiles/finance/ubuntu/experimental/Dockerfile.root.in
@@ -0,0 +1,75 @@
+# docker-finance | modern accounting for the power-user
+#
+# Copyright (C) 2021-2024 Aaron Fiore (Founder, Evergreen Crypto LLC)
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <https://www.gnu.org/licenses/>.
+
+#
+# ROOT.cern (and docker-finance requirements)
+#
+
+USER root
+
+# ROOT.cern dependencies (regardless of building or not)
+RUN apt-get install -y \
+  binutils \
+  cmake \
+  dpkg-dev \
+  g++ \
+  gcc \
+  libssl-dev \
+  libtbb-dev \
+  libx11-dev \
+  libxext-dev \
+  libxft-dev \
+  libxpm-dev \
+  python3
+
+# ROOT.cern pre-compiled installation
+RUN apt-get install -y curl
+USER builder
+WORKDIR /usr/local/src
+RUN curl --location -O "https://root.cern/download/root_v6.32.02.Linux-ubuntu24.04-x86_64-gcc13.2.tar.gz"
+RUN tar xvzf "root_v6.32.02.Linux-ubuntu24.04-x86_64-gcc13.2.tar.gz"
+
+# ROOT.cern environment
+#
+# bash_aliases notes:
+#
+#  - *MUST* source thisroot.sh (from any directory)
+#
+#  - For `docker-finance version` command:
+#
+#    - To avoid thisroot.sh error, pushd/popd is required (per thisroot.sh)
+#
+#    - Although $ROOTSYS will be available during normal operation, it won't
+#      be avaialble to `docker-finance version`- so add binary to PATH here.
+USER @DOCKER_FINANCE_USER@
+RUN echo "pushd /usr/local/src/root/bin 1>/dev/null && source \"/usr/local/src/root/bin/thisroot.sh\" && popd 1>/dev/null" | tee -a ~/.bash_aliases
+RUN echo "export PATH=\"\$PATH::/usr/local/src/root/bin\"" | tee -a ~/.bash_aliases
+
+# docker-finance
+USER root
+RUN apt-get install -y \
+  googletest \
+  libbenchmark-dev \
+  libbotan-2-dev \
+  libcrypto++-dev \
+  libsodium-dev
+
+# docker-finance (experimental / testing)
+RUN apt-get install -y \
+  libunuran-dev
+
+# vim: sw=2 sts=2 si ai et
diff --git a/client/docker-finance.yaml b/client/docker-finance.yaml
index 411e2de..d35bf2a 100644
--- a/client/docker-finance.yaml
+++ b/client/docker-finance.yaml
@@ -37,7 +37,6 @@ container:
       base:
         packages:
           - "bc"
-          - "ghc"
           - "git"
           - "hledger-iadd"
           - "hledger-ui"
@@ -48,8 +47,11 @@ container:
           - "vim"
           - "visidata"
           - "xsv"
+          # For experimental build
+          #- "unuran"
         commands:
           - "csvstat --version"
+          - "ghc-pkg --version"
           - "hledger-flow --version"
           - "shyaml --version"
       fetch:
@@ -80,21 +82,24 @@ container:
         packages:
           - "bc"
           - "cargo"
-          - "ghc"
+          - "g++"
           - "git"
           - "haskell-stack"
+          - "hledger"
           - "hledger-ui"
           - "hledger-web"
-          - "hledger"
           - "pipx"
           - "vim"
           - "visidata"
           - "zlib1g-dev"
+          # For experimental build
+          #- "libunuran-dev"
         commands:
-          - "xsv --version"
           - "csvstat --version"
+          - "ghc-pkg --version"
           - "hledger-flow --version"
           - "shyaml --version"
+          - "xsv --version"
       fetch:
         packages:
           - "composer"
diff --git a/client/src/docker/lib/internal/lib_docker.bash b/client/src/docker/lib/internal/lib_docker.bash
index e852fa0..b6bb5b8 100644
--- a/client/src/docker/lib/internal/lib_docker.bash
+++ b/client/src/docker/lib/internal/lib_docker.bash
@@ -235,29 +235,40 @@ function lib_docker::__build()
 
   if [[ "$global_platform" != "dev-tools" ]]; then
 
-    local _in_files=()
+    local _files=()
+    local _path="${global_repo_dockerfiles}/${global_platform}"
 
     case "$global_arg_type" in
-      default | slim | experimental)
-        _in_files+=("hledger-flow.src")
-        [[ "$global_arg_type" =~ ^default$|^experimental$ ]] && _in_files+=("root")
-        [[ "$global_arg_type" =~ ^experimental$ ]] && _in_files+=("hledger.src")
+      default)
+        _files+=("${_path}/Dockerfile.hledger-flow.src.in")
+        _files+=("${_path}/Dockerfile.root.in")
         ;;
-      tiny | micro)
-        _in_files+=("hledger-flow.bin")
-        [[ "$global_arg_type" == "tiny" ]] && _in_files+=("root")
+      slim)
+        _files+=("${_path}/Dockerfile.hledger-flow.src.in")
+        ;;
+      tiny)
+        _files+=("${_path}/Dockerfile.hledger-flow.bin.in")
+        _files+=("${_path}/Dockerfile.root.in")
+        ;;
+      micro)
+        _files+=("${_path}/Dockerfile.hledger-flow.bin.in")
+        ;;
+      experimental)
+        _path+="/experimental"
+        _files+=("${_path}/Dockerfile.hledger-flow.src.in")
+        _files+=("${_path}/Dockerfile.hledger.src.in")
+        _files+=("${_path}/Dockerfile.root.in")
         ;;
       *)
         lib_utils::die_fatal "unsupported build"
         ;;
     esac
 
-    for _file in "${_in_files[@]}"; do
-      local _path="${global_repo_dockerfiles}/${global_platform}/Dockerfile.${_file}.in"
-      lib_utils::print_debug "Appending '${_path}' to '${_final}'"
+    for _file in "${_files[@]}"; do
+      lib_utils::print_debug "Appending '${_file}' to '${_final}'"
       sed \
         -e "s:@DOCKER_FINANCE_USER@:${DOCKER_FINANCE_USER}:g" \
-        "$_path" >>"$_final" || return $?
+        "$_file" >>"$_final" || return $?
     done
 
   fi