commit 6be211bdd962497bd66812143207edbcf53ec43e
Author: Peter McGoron <code@mcgoron.com>
Date:   Fri May 26 15:00:46 2023 -0400

    init

diff --git a/Dockerfile b/Dockerfile
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index 0000000..a687cd8
--- /dev/null
+++ b/Dockerfile
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+FROM debian:bookworm
+# FIXME: Very large User IDs cause ADD to not work properly. Use RUN
+# instead.
+
+ENV FPGA_FAM=xc7
+ENV F4PGA_INSTALL_DIR=/home/user/f4pga
+
+# Install base system and system user.
+RUN apt-get update \
+    && apt-get install -y git sudo wget xz-utils \
+    && adduser --quiet --disabled-password user
+USER user:user
+WORKDIR /home/user
+
+# Install F4PGA.
+# FIXME: We need to either enable passwordless sudo for user (not good)
+# or disable all instances of sudo. This hack works for this commit but
+# might break in the future.
+COPY --chown=user:user f4pga/scripts/prepare_environment.sh /home/user
+RUN sed -i 's/sudo/#sudo/g' ./prepare_environment.sh \
+    && ./prepare_environment.sh \
+    && rm ./prepare_environment.sh
+
+# Install LiteX.
+COPY --chown=user:user litex/litex_setup.py /home/user
+WORKDIR /home/user
+RUN    chmod +x litex_setup.py \
+    && bash -c '\
+source ~/f4pga/xc7/conda/etc/profile.d/conda.sh; \
+conda run -n xc7 ./litex_setup.py --init --install --user --tag=2023.04'
+
+# Install Buildroot.
+WORKDIR /home/user
+COPY --chown=user:user buildroot.tar.gz /home/user
+RUN tar -xvf buildroot.tar.gz && rm buildroot.tar.gz
diff --git a/Makefile b/Makefile
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+++ b/Makefile
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+.PHONY: image f4pga buildroot litex clone help
+ADDED_FILES=f4pga/scripts/prepare_environment.sh litex/litex_setup.py buildroot.tar.gz
+
+help:
+	@echo 'make image: build docker image'
+	@echo 'make open: open docker image'
+	@echo 'make clone: clone repositories'
+
+image: ${ADDED_FILES}
+	docker build -t "upsilon-buildenv" .
+
+## Download external projects
+clone: f4pga buildroot litex
+
+f4pga:
+	if [ ! -d 'f4pga' ]; then \
+		git clone https://github.com/chipsalliance/f4pga; \
+	fi
+	cd f4pga && git checkout main && git pull && \
+		git checkout -B upsilon_stable 835a40534f9efd70770d74f56f25fef6cfc6ebc6
+
+buildroot:
+	if [ ! -d 'buildroot' ]; then \
+		git clone https://git.buildroot.org/buildroot; \
+	fi
+	cd buildroot && git checkout master && git pull && \
+		git checkout -B upsilon_stable 2023.02.1
+	tar -czvf buildroot.tar.gz buildroot/
+
+litex:
+	if [ ! -d 'litex' ]; then \
+		git clone https://github.com/enjoy-digital/litex; \
+	fi
+	cd litex && git checkout master && git pull && \
+		git checkout -B upsilon_stable c6ccb626e88168045edacced3743f6bd98746742
diff --git a/environment_setup.md b/environment_setup.md
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+++ b/environment_setup.md
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+MagLab Upsilon development environment setup.  
+Written by Peter McGoron.
+
+Preqreuisites
+=============
+
+Rebinding Caps Lock to Escape
+-----------------------------
+
+	gsettings set org.gnome.desktop.input-sources xkb-options "['caps:swapescape']"
+
+Installing OpenFPGALoader
+-------------------------
+
+Then install [openFPGALoader][1]. This utility entered the Ubuntu repositories
+in 23.04. Install and compile it if you do not have it. Install the udev rule
+so that admin access is not required to load FPGA bitstreams.
+
+[1]: https://trabucayre.github.io/openFPGALoader/index.html
+
+Setup Rootless Docker
+---------------------
+
+Docker allows you to run programs in containers, which are isolated
+environments. Upsilon development (at the Maglab) uses Docker for
+reproducibility: the environment can be set up automatically, and re-setup
+whenever needed.
+
+If you have issues with docker, try adding to `~/.config/docker/daemon.json`
+
+    {
+       "storage-driver": "fuse-overlayfs"
+    }
+
+
+Download and Install Python3
+----------------------------
+
+Install `python3-venv` (or `python3-virtualenv`) and `python3-pip`.
+
+Setup Build Environment
+=======================
+
+