diff --git a/.config/emacs/init.el b/.config/emacs/init.el
index 11641d9..94dbd23 100644
--- a/.config/emacs/init.el
+++ b/.config/emacs/init.el
@@ -183,7 +183,11 @@
 ;; EPUB reader
 (use-package nov
   :init
-  (add-to-list 'auto-mode-alist '("\\.epub\\'" . nov-mode)))
+  (setq auto-mode-alist
+        (map-merge 'list
+                   '(("\\.epub\\'" . nov-mode))
+                   auto-mode-alist))
+  )
 
 (use-package company
   :init (global-company-mode)
@@ -243,18 +247,21 @@
 (defun load-python-env ()
   "Set up the Python IDE in the current project."
   (interactive)
-  (progn
-    (ignore-errors (poetry-venv-workon))
-    (eglot-ensure)))
+  (when (derived-mode-p 'python-mode)
+    (progn
+      (poetry-venv-workon)
+      (eglot-ensure))))
 
 (use-package python
   :bind (:map python-mode-map
               ("C-c C-p" . nil)
               ("C-c C-l" . nil)
               ("C-c t" . elpy-test))
-  :hook (python-mode . load-python-env)
+  :hook (hack-local-variables . load-python-env)
   :config
   (load "python-tests.el")
+  :custom
+  (elpy-test-runner 'elpy-test-pytest-runner)
   )
 
 ;; Jupyter notebook integration
@@ -280,6 +287,19 @@
   (rustic-lsp-client 'eglot)
   )
 
+(use-package go-config
+  :ensure nil
+  :hook
+  (go-ts-mode . eglot-ensure)
+  :init
+  (setq auto-mode-alist
+        (map-merge 'list
+                   '(("\\.go\\'" . go-ts-mode)
+                     ("/go\\.mod\\'" . go-mod-ts-mode)
+                     ("/go\\.work\\'" . go-work-ts-mode))
+                   auto-mode-alist))
+  )
+
 (use-package gptel
   :custom
   ; keep-sorted start
diff --git a/.config/setup/01-install-packages.sh b/.config/setup/01-install-packages.sh
index 2c49b8f..029fd59 100755
--- a/.config/setup/01-install-packages.sh
+++ b/.config/setup/01-install-packages.sh
@@ -27,6 +27,7 @@ DEB_PKGS=(
     fuzzel
     gdb
     gnumeric
+    gopls
     graphviz
     grim
     guile-3.0
@@ -86,12 +87,14 @@ DEB_PKGS=(
     xdg-desktop-portal-wlr
     xournalpp
     yt-dlp
+    awscli
     zip
     # keep-sorted end
 )
 META_PKGS=(
     # keep-sorted start
     fonts-noto
+    golang
     podman-compose
     # keep-sorted end
 )
diff --git a/.config/systemd/user/get-nasa-apod.service b/.config/systemd/user/get-nasa-apod.service
new file mode 100644
index 0000000..1da3c26
--- /dev/null
+++ b/.config/systemd/user/get-nasa-apod.service
@@ -0,0 +1,10 @@
+[Unit]
+Description=Refresh the wallpaper using the NASA Astronomy Picture of the Day
+Wants=get-nasa-apod.timer
+
+[Service]
+WorkingDirectory=%h
+ExecStart=%h/.local/bin/get-nasa-apod
+
+[Install]
+WantedBy=default.target
diff --git a/.config/systemd/user/get-nasa-apod.timer b/.config/systemd/user/get-nasa-apod.timer
new file mode 100644
index 0000000..4cac963
--- /dev/null
+++ b/.config/systemd/user/get-nasa-apod.timer
@@ -0,0 +1,10 @@
+[Unit]
+Description=Daily NASA wallpaper fetch
+Requires=get-nasa-apod.service
+
+[Timer]
+Unit=nasa-apod.service
+OnCalendar=daily
+
+[Install]
+WantedBy=timers.target
diff --git a/.gitconfig b/.gitconfig
index 1aaaa5d..e0d1e54 100644
--- a/.gitconfig
+++ b/.gitconfig
@@ -10,6 +10,10 @@
 [remote]
         pushDefault = .
 [git-sync]
+        # keep-sorted start
+        syncEnabled = true
+        syncNewFiles = true
         syncSkipHooks = true
+        # keep-sorted end
 [include]
         path = .hostgitconfig
diff --git a/.local/bin/get-nasa-apod b/.local/bin/get-nasa-apod
new file mode 100755
index 0000000..e6560b9
--- /dev/null
+++ b/.local/bin/get-nasa-apod
@@ -0,0 +1,41 @@
+#! /usr/bin/bash
+
+set -euo pipefail
+IFS=$'\n\t'
+
+API_KEY="${NASA_API_KEY:-DEMO_KEY}"
+if [ "${API_KEY}" = "DEMO_KEY" ]; then
+    echo "No API key set! using demo key."
+fi
+
+WALLPAPERS="$(systemd-path user)"/Wallpapers
+
+mkdir --parents "${WALLPAPERS}"
+
+APOD_URL="https://api.nasa.gov/planetary/apod?api_key=${API_KEY}"
+response="$(curl --silent "${APOD_URL}")"
+picture_date="$(printf '%s' "${response}" | jq --raw-output .date)"
+picture_url="$(printf '%s' "${response}" | jq --raw-output .hdurl)"
+
+extension="${picture_url##*.}"
+filename="${picture_date}.${extension}"
+outfile="${WALLPAPERS}/${filename}"
+
+if [ -f "${outfile}" ]; then
+    echo "Target file already exists"
+    exit 0
+fi
+
+tempfile="$(mktemp)"
+curl \
+    --location \
+    --output "${tempfile}" \
+    --silent \
+    "${picture_url}"
+mv "${tempfile}" "${outfile}"
+ln \
+    --force \
+    --symbolic \
+    "${outfile}" \
+    "${WALLPAPERS}/today.${extension}"
+swaymsg reload
diff --git a/.local/bin/sync-git-repos b/.local/bin/sync-git-repos
index 92d7258..d1fce9e 100755
--- a/.local/bin/sync-git-repos
+++ b/.local/bin/sync-git-repos
@@ -12,7 +12,7 @@ sync_repo () {
     repo=$1
 
     echo git-sync "${repo}"
-    ( cd "${repo}" && "$(systemd-path user-state-private)"/git-sync/git-sync -n -s sync )
+    ( cd "${repo}" && "$(systemd-path user-state-private)"/git-sync/git-sync sync )
     echo
 }