Notes, learnings, and discoveries by Sachin Dharmapurikar.https://marginalia.thoughtworker.in/https://marginalia.thoughtworker.in/posts/brew-tailscaled-macos-split-dns/https://marginalia.thoughtworker.in/posts/brew-tailscaled-macos-split-dns/MagicDNS works through Tailscale's resolver but not through the system. Why the brew-installed tailscaled silently skips the split-DNS rule the App Store build sets up, and the one-line fix.Fri, 08 May 2026 00:00:00 GMTtailscalemacosdnshomebrewnetworkingdebugginghttps://marginalia.thoughtworker.in/posts/colima-launchd-sequoia-provenance/https://marginalia.thoughtworker.in/posts/colima-launchd-sequoia-provenance/A reboot test on a headless Mac surfaced an opaque launchd error that traced back to a months-old architectural decision and a SIP-protected extended attribute most people never see.Tue, 05 May 2026 00:00:00 GMTmacoscolimalaunchdsequoiatilhttps://marginalia.thoughtworker.in/posts/macmini-headless/https://marginalia.thoughtworker.in/posts/macmini-headless/How I got a Mac Mini to boot to a fully remote-accessible state without physical presence — FileVault disabled, auto-login configured, and Tailscale launchd tuned for network wait.Mon, 04 May 2026 00:00:00 GMTmacostailscalelaunchdheadlesskarkhanahttps://marginalia.thoughtworker.in/posts/self-hosted-gitea-with-github-backup/https://marginalia.thoughtworker.in/posts/self-hosted-gitea-with-github-backup/How I migrated repos from GitHub to a self-hosted Gitea instance, configured push-mirrors back to GitHub, and the specific API and URL format issues I hit along the way.Mon, 04 May 2026 00:00:00 GMTgiteadokploygithubgitself-hostedkarkhanahttps://marginalia.thoughtworker.in/posts/tmux-cursor-shape-til/https://marginalia.thoughtworker.in/posts/tmux-cursor-shape-til/Random characters dribbling into your terminal? It's an escape sequence that lost its ESC byte upstream. In tmux, this often comes from how `\E` is quoted in `terminal-overrides`.Mon, 04 May 2026 00:00:00 GMTtmuxterminalmacosdebuggingtilhttps://marginalia.thoughtworker.in/posts/tmux-ssh-headless-mac/https://marginalia.thoughtworker.in/posts/tmux-ssh-headless-mac/Configure tmux to auto-spawn sessions on SSH login and tune terminal defaults so your terminal state persists across any network interruption — airport, flight, hotel WiFi, whatever.Mon, 04 May 2026 00:00:00 GMTtmuxsshmacoskarkhanahttps://marginalia.thoughtworker.in/posts/caddy-to-tailscale-serve/https://marginalia.thoughtworker.in/posts/caddy-to-tailscale-serve/I spent an evening fighting Caddy on macOS for tailnet TLS. Then I deleted Caddy, ran one Tailscale command, and was done in two minutes.Sat, 02 May 2026 00:00:00 GMTtailscalecaddymacostlshomelabkarkhanahttps://marginalia.thoughtworker.in/posts/colima-vz-macos/https://marginalia.thoughtworker.in/posts/colima-vz-macos/Five gotchas that cost me an evening setting up Colima with the vz backend as a real workhorse — not a dev convenience, but where actual services run.Sat, 02 May 2026 00:00:00 GMTcolimamacosdockerhomelabkarkhanahttps://marginalia.thoughtworker.in/posts/decision-records/https://marginalia.thoughtworker.in/posts/decision-records/Solo developers need Decision Records more than teams do — not less. Future-you has forgotten the reasoning. Here's the template and why it matters.Sat, 02 May 2026 00:00:00 GMTpracticesdocumentationdecision-recordskarkhanasolo-devhttps://marginalia.thoughtworker.in/posts/karkhana-thesis/https://marginalia.thoughtworker.in/posts/karkhana-thesis/I run three machines, ten projects, and one production app as a solo dev. Here's the mental model — the quality baseline, the principles, and why AI changed what's possible.Sat, 02 May 2026 00:00:00 GMTkarkhanasolo-devai-agentsinfrastructurehttps://marginalia.thoughtworker.in/posts/three-tier-backup/https://marginalia.thoughtworker.in/posts/three-tier-backup/A practical guide to backing up a home server as a solo dev — three failure domains, ~€8/month, and the one step most people skip.Sat, 02 May 2026 00:00:00 GMTbackuprestichomelabkarkhanasolo-devhttps://marginalia.thoughtworker.in/posts/context-bloat-til/https://marginalia.thoughtworker.in/posts/context-bloat-til/I switched to Hermes because OpenClaw got slow and bloated. Six weeks later, Hermes was doing the same thing. Here's what I found and fixed.Mon, 20 Apr 2026 00:00:00 GMTaihermestokensoptimizationmcptilhttps://marginalia.thoughtworker.in/posts/khabar-llm-wiki-radio-show/https://marginalia.thoughtworker.in/posts/khabar-llm-wiki-radio-show/How I wired together email newsletters, a local LLM wiki, and a radio narrator on entry-level hardware — with 7 bugs along the way.Mon, 20 Apr 2026 00:00:00 GMTaiautomationlocal-firstttsworkflowhttps://marginalia.thoughtworker.in/posts/one-agent-many-faces/https://marginalia.thoughtworker.in/posts/one-agent-many-faces/Profiles vs personality switching in Hermes Agent — and why the distinction matters less than I thought.Mon, 20 Apr 2026 00:00:00 GMTaihermesproductivityautomationhttps://marginalia.thoughtworker.in/posts/docker-healthcheck-localhost-alpine/https://marginalia.thoughtworker.in/posts/docker-healthcheck-localhost-alpine/How a localhost vs 127.0.0.1 difference in Alpine Linux caused Traefik to silently drop routing to my container.Sun, 19 Apr 2026 00:00:00 GMTdockertraefikdebuggingdokployhttps://marginalia.thoughtworker.in/posts/tailscale-services-dashboard/https://marginalia.thoughtworker.in/posts/tailscale-services-dashboard/Debugging Tailscale Services — the three-layer mental model that would have saved me hours.Sun, 19 Apr 2026 00:00:00 GMTtailscalenetworkingdevopshttps://marginalia.thoughtworker.in/posts/welcome-to-marginalia/https://marginalia.thoughtworker.in/posts/welcome-to-marginalia/Introducing Marginalia — a personal log of learnings by Sachin Dharmapurikar.Fri, 10 Apr 2026 00:00:00 GMTmetablog