Add self-hosted development system example

examples/system/self-hosted-dev.scm

@@ -0,0 +1,43 @@
+;; Example self-hosted Fruix development system declaration.
+;;
+;; This is intended for a Fruix node that should be able to:
+;; - run Fruix locally
+;; - enter a development environment with the recovered developer tooling
+;; - enter a sanitized build environment for package/base work
+;; - host the pi agent runtime from the development profile
+;;
+;; Build it with:
+;;   fruix system build examples/system/self-hosted-dev.scm \
+;;     --system self-hosted-development-operating-system
+;;
+;; After boot, typical workflows are:
+;;   eval "$(/usr/local/bin/fruix-development-environment)"
+;;   eval "$(/usr/local/bin/fruix-build-environment)"
+;;
+;; The development/build profiles currently include:
+;; - FreeBSD runtime + headers
+;; - Clang toolchain
+;; - GNU make
+;; - Autotools
+;; - OpenSSL
+;; - zlib
+;; - sh + bash
+;; - nodejs + npm
+;; - ripgrep
+;; - tmux
+;; - neovim
+
+(use-modules (fruix system freebsd)
+             (fruix packages freebsd))
+
+(define self-hosted-development-operating-system
+  (operating-system
+   #:host-name "fruix-selfhosted"
+   ;; Enable SSH on the node so it can be used as an operator/development host.
+   #:rc-conf-entries '(("clear_tmp_enable" . "YES")
+                       ("sendmail_enable" . "NONE")
+                       ("sshd_enable" . "YES"))
+   ;; For real deployments, add keys with #:root-authorized-keys or customize
+   ;; the default operator account as needed.
+   #:development-packages %freebsd-development-profile-packages
+   #:build-packages %freebsd-development-profile-packages))