nandi/frq · apk.bb

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Write the build in babashka, and pin the babashka   1
3exec "$(dirname "$0")/bb" "$0" "$@"
Build the APK as derivations only, and retire the buck2 graph   6;; The APK, out of the flake.
Write the build in babashka, and pin the babashka   7
8;;   apk.bb [build|install|run|log]
Build the APK as derivations only, and retire the buck2 graph   10;; The build itself is nix/android.nix, reached as `.#apk`; this only asks nix
11;; for the file and then does what was asked with it. Nothing here names an
12;; Android SDK, an NDK, a Chez cross target or an OpenSSL: the derivation
13;; builds or fetches every one of them, which is the difference between this
14;; and the buck2 graph it replaces — that one was handed four hand-built paths
15;; from the machine and stopped if any was missing.
17;; The APK is signed with a debug key generated inside the derivation, so the
18;; output is installable and not reproducible; anything meant for a store gets
19;; signed from `.#apk-unsigned` instead. See nix/android.nix.
21;; FRQ_NIX_STORE builds the whole graph somewhere else rather than here —
23;;     FRQ_NIX_STORE=ssh-ng://eu.nixbuild.net scripts/apk.bb
25;; which is the shape android.nix asks for: with a `builders` entry instead,
26;; nix copies every remotely-built output back, and androidenv's NDK is both
27;; `preferLocalBuild` and absent from cache.nixos.org, so 3.1 GB of toolchain
28;; is built here and uploaded. With the remote as the *store* only .drv files
29;; go up. An install then needs the file here, so it is fetched back at the
30;; end — one APK rather than the closure that made it.
Write the build in babashka, and pin the babashka   31(require '[babashka.classpath :as cp])
32(cp/add-classpath (str (babashka.fs/parent *file*)))
33(require '[frq.paths :as paths]
34         '[babashka.fs :as fs]
35         '[babashka.process :as p]
36         '[clojure.string :as str])
38(def root (str (fs/canonicalize (fs/path (fs/parent *file*) ".."))))
39(def action (or (first *command-line-args*) "build"))
40(def adb (paths/env "ADB" (str (fs/path (fs/home) ".local" "share" "android-sdk"
41                                        "platform-tools" "adb"))))
42(def package "uk.nandi.frq")
Build the APK as derivations only, and retire the buck2 graph   44;; --eval-store auto goes with a remote store and only with one: evaluation
45;; wants this tree, which is here.
46
47  (when-let [s (paths/env "FRQ_NIX_STORE" nil)]
48    ["--store" s "--eval-store" "auto"]))
50;; Built without a `result` symlink: the path is what the caller wants, and a
51;; symlink into a store that may not be this one is not a useful thing to leave
52;; in the tree.
53(defn build []
54  (let [out (->> (paths/nix root (concat ["nix" "build" (str root "#apk")
55                                          "--no-link" "--print-out-paths"]
57                 (apply paths/out)
58                 str/split-lines
59                 (filter #(str/starts-with? % "/nix/store/"))
60                 last)]
61    (when-not out
62      (paths/die "nix build printed no store path"))
63
65;; Off a remote store the path names a file on the builder, so adb has nothing
66;; to open. `nix copy --no-check-sigs --from` brings just that one path here.
67(defn local-file []
68  (let [out (build)]
69    (when store
70      (apply p/shell (paths/nix root (concat ["nix" "copy" "--no-check-sigs"
71                                              "--from" (paths/env "FRQ_NIX_STORE" nil)
73
Write the build in babashka, and pin the babashka   74
75(case action
Build the APK as derivations only, and retire the buck2 graph   76  "build" (println (build))
77  "install" (p/shell adb "install" "-r" (local-file))
78  "run" (let [file (local-file)]
Write the build in babashka, and pin the babashka   79          (p/shell adb "install" "-r" file)
80          (p/shell adb "shell" "am" "force-stop" package)
81          (p/shell adb "shell" "am" "start" "-n" (str package "/.FrqActivity")))
82  "log" (p/shell adb "logcat" "-s" "VidyaJolt" "Vidya")
83  (paths/die "usage: apk.bb [build|install|run|log]"))

Write the build in babashka, and pin the babashka 34832a8 nandi 18d ago	1	#!/bin/sh
	2	#_(
	3	exec "$(dirname "$0")/bb" "$0" "$@"
	4	)
	5
Build the APK as derivations only, and retire the buck2 graph 3bc3aaa nandi 16d ago	6	;; The APK, out of the flake.
Write the build in babashka, and pin the babashka 34832a8 nandi 18d ago	7	;;
	8	;; apk.bb [build\|install\|run\|log]
	9	;;
Build the APK as derivations only, and retire the buck2 graph 3bc3aaa nandi 16d ago	10	;; The build itself is nix/android.nix, reached as `.#apk`; this only asks nix
	11	;; for the file and then does what was asked with it. Nothing here names an
	12	;; Android SDK, an NDK, a Chez cross target or an OpenSSL: the derivation
	13	;; builds or fetches every one of them, which is the difference between this
	14	;; and the buck2 graph it replaces — that one was handed four hand-built paths
	15	;; from the machine and stopped if any was missing.
	16	;;
	17	;; The APK is signed with a debug key generated inside the derivation, so the
	18	;; output is installable and not reproducible; anything meant for a store gets
	19	;; signed from `.#apk-unsigned` instead. See nix/android.nix.
	20	;;
	21	;; FRQ_NIX_STORE builds the whole graph somewhere else rather than here —
	22	;;
	23	;; FRQ_NIX_STORE=ssh-ng://eu.nixbuild.net scripts/apk.bb
	24	;;
	25	;; which is the shape android.nix asks for: with a `builders` entry instead,
	26	;; nix copies every remotely-built output back, and androidenv's NDK is both
	27	;; `preferLocalBuild` and absent from cache.nixos.org, so 3.1 GB of toolchain
	28	;; is built here and uploaded. With the remote as the store only .drv files
	29	;; go up. An install then needs the file here, so it is fetched back at the
	30	;; end — one APK rather than the closure that made it.
Write the build in babashka, and pin the babashka 34832a8 nandi 18d ago	31	(require '[babashka.classpath :as cp])
	32	(cp/add-classpath (str (babashka.fs/parent file)))
	33	(require '[frq.paths :as paths]
	34	'[babashka.fs :as fs]
	35	'[babashka.process :as p]
	36	'[clojure.string :as str])
	37
	38	(def root (str (fs/canonicalize (fs/path (fs/parent file) ".."))))
	39	(def action (or (first command-line-args) "build"))
	40	(def adb (paths/env "ADB" (str (fs/path (fs/home) ".local" "share" "android-sdk"
	41	"platform-tools" "adb"))))
	42	(def package "uk.nandi.frq")
	43
Build the APK as derivations only, and retire the buck2 graph 3bc3aaa nandi 16d ago	44	;; --eval-store auto goes with a remote store and only with one: evaluation
	45	;; wants this tree, which is here.
	46	(def store
	47	(when-let [s (paths/env "FRQ_NIX_STORE" nil)]
	48	["--store" s "--eval-store" "auto"]))
	49
	50	;; Built without a `result` symlink: the path is what the caller wants, and a
	51	;; symlink into a store that may not be this one is not a useful thing to leave
	52	;; in the tree.
	53	(defn build []
	54	(let [out (->> (paths/nix root (concat ["nix" "build" (str root "#apk")
	55	"--no-link" "--print-out-paths"]
	56	store))
	57	(apply paths/out)
	58	str/split-lines
	59	(filter #(str/starts-with? % "/nix/store/"))
	60	last)]
	61	(when-not out
	62	(paths/die "nix build printed no store path"))
	63	out))
	64
	65	;; Off a remote store the path names a file on the builder, so adb has nothing
	66	;; to open. `nix copy --no-check-sigs --from` brings just that one path here.
	67	(defn local-file []
	68	(let [out (build)]
	69	(when store
	70	(apply p/shell (paths/nix root (concat ["nix" "copy" "--no-check-sigs"
	71	"--from" (paths/env "FRQ_NIX_STORE" nil)
	72	out]))))
	73	out))
Write the build in babashka, and pin the babashka 34832a8 nandi 18d ago	74
	75	(case action
Build the APK as derivations only, and retire the buck2 graph 3bc3aaa nandi 16d ago	76	"build" (println (build))
	77	"install" (p/shell adb "install" "-r" (local-file))
	78	"run" (let [file (local-file)]
Write the build in babashka, and pin the babashka 34832a8 nandi 18d ago	79	(p/shell adb "install" "-r" file)
	80	(p/shell adb "shell" "am" "force-stop" package)
	81	(p/shell adb "shell" "am" "start" "-n" (str package "/.FrqActivity")))
	82	"log" (p/shell adb "logcat" "-s" "VidyaJolt" "Vidya")
	83	(paths/die "usage: apk.bb [build\|install\|run\|log]"))