Add modular dev environment installer, dotfiles, and desnap script

Adds a TUI-driven, rollback-capable installer (install/install.sh + install/modules/*.sh) covering JS/Python/systems toolchains, dev tooling, browsers, chat apps, GNOME extras, and misc setup (wakatime key, ssh/gpg perms, apt mirror benchmarking), all sourced from each vendor's official install method. bootstrap.sh stows the zsh/git/tmux/vscode dotfiles and runs the installer; desnap.sh purges snapd and replaces default snaps with apt/Flatpak equivalents.
2026-11-11 14:25:13 +00:00 · 2026-07-15 17:02:27 +03:00
parent e87c64c3be
commit 36f0caa66e
48 changed files with 1550 additions and 1 deletions
@@ -0,0 +1,79 @@
+install_mirrors() {
+  local codename
+  codename=$(ubuntu_codename)
+
+  local candidates
+  candidates=$(curl -fsSL --max-time 5 https://mirrors.ubuntu.com/mirrors.txt) || {
+    err "could not fetch the official Ubuntu mirror list"
+    return 1
+  }
+
+  log "benchmarking mirrors for speed + freshness (this takes a few seconds)"
+
+  local best_url="" best_time="" url resp t last_modified age_hours checked=0
+  while IFS= read -r url; do
+    if [[ -z "$url" || "$url" == \#* ]]; then continue; fi
+    if [[ $checked -ge 12 ]]; then break; fi
+    checked=$((checked + 1))
+
+    resp=$(curl -o /dev/null -sD - --max-time 3 -w '\n%{time_total}' "${url}dists/${codename}/Release" 2>/dev/null) || continue
+    if [[ -z "$resp" ]]; then continue; fi
+
+    t=$(tail -n1 <<< "$resp")
+    if [[ -z "$t" ]]; then continue; fi
+
+    last_modified=$(grep -i '^Last-Modified:' <<< "$resp" | head -n1 | cut -d' ' -f2- | tr -d '\r')
+    if [[ -n "$last_modified" ]]; then
+      age_hours=$(( ($(date +%s) - $(date -d "$last_modified" +%s 2>/dev/null || echo 0)) / 3600 ))
+      if [[ $age_hours -gt 72 ]]; then continue; fi
+    fi
+
+    if [[ -z "$best_time" ]] || awk -v a="$t" -v b="$best_time" 'BEGIN{exit !(a<b)}'; then
+      best_time="$t"
+      best_url="$url"
+    fi
+  done <<< "$candidates"
+
+  if [[ -z "$best_url" ]]; then
+    warn "no mirror passed the speed/freshness check, leaving apt sources untouched"
+    return 0
+  fi
+
+  ok "fastest fresh mirror: $best_url (${best_time}s)"
+  _mirrors_apply "$best_url"
+}
+
+# Rewrites whichever apt sources format is in use to point at the chosen
+# mirror. Ubuntu 24.04+ (and 26.04) default to the deb822
+# /etc/apt/sources.list.d/ubuntu.sources file; older installs still use the
+# one-line-per-entry /etc/apt/sources.list. security.ubuntu.com is left
+# alone on purpose — security updates stay on Canonical's own CDN.
+_mirrors_apply() {
+  local mirror="${1%/}"
+  local deb822="/etc/apt/sources.list.d/ubuntu.sources"
+  local legacy="/etc/apt/sources.list"
+  local target="" backup=""
+
+  if [[ -f "$deb822" ]]; then
+    target="$deb822"
+  elif [[ -f "$legacy" ]] && grep -q archive.ubuntu.com "$legacy"; then
+    target="$legacy"
+  else
+    warn "no recognized apt sources file found, skipping"
+    return 0
+  fi
+
+  backup="${target}.bak.$$"
+  sudo cp "$target" "$backup"
+  rollback_push "sudo mv '$backup' '$target'; apt_invalidate"
+  sudo sed -i -E "s#https?://[a-zA-Z0-9.-]*archive\.ubuntu\.com/ubuntu#${mirror}#g" "$target"
+
+  apt_invalidate
+  if ! apt_update_once; then
+    err "apt update failed against $mirror"
+    return 1
+  fi
+
+  sudo rm -f "$backup"
+  ok "apt now points at $mirror"
+}