chore(tools): remove depot-scanner & tvlc r/5490

These are both unused things from a long time ago, which we don't need
to keep around anymore.

Their design doc has been marked as archived.

Change-Id: Icd2744e511e78ec95ec8f39e5f79ed1fe98e9e4a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/7639
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>

9 files changed, 0 insertions, 489 deletions

diff --git a/tools/depot-scanner/OWNERS b/tools/depot-scanner/OWNERS
deleted file mode 100644
index 34c668e2fbf5..000000000000
--- a/tools/depot-scanner/OWNERS
+++ /dev/null
@@ -1 +0,0 @@
-riking
diff --git a/tools/depot-scanner/default.nix b/tools/depot-scanner/default.nix
deleted file mode 100644
index 59b6e53f7097..000000000000
--- a/tools/depot-scanner/default.nix
+++ /dev/null
@@ -1,18 +0,0 @@
-{ depot, pkgs, ... }:
-
-let
-  localProto = depot.nix.buildGo.grpc {
-    name = "code.tvl.fyi/tools/depot-scanner/proto";
-    proto = ./depot_scanner.proto;
-  };
-in
-depot.nix.buildGo.program
-  {
-    name = "depot-scanner";
-    srcs = [
-      ./main.go
-    ];
-    deps = [
-      localProto
-    ];
-  } // { inherit localProto; }
diff --git a/tools/depot-scanner/depot_scanner.proto b/tools/depot-scanner/depot_scanner.proto
deleted file mode 100644
index ecb5b1cb3335..000000000000
--- a/tools/depot-scanner/depot_scanner.proto
+++ /dev/null
@@ -1,52 +0,0 @@
-// Copyright 2020 TVL
-// SPDX-License-Identifier: MIT
-
-syntax = "proto3";
-package tvl.tools.depot_scanner;
-option go_package = "code.tvl.fyi/tools/depot-scanner/proto";
-
-enum PathType {
-  UNKNOWN = 0;
-  DEPOT = 1;
-  STORE = 2;
-  CORE = 3;
-}
-
-message ScanRequest {
-  // Which revision of the depot
-  string revision = 1;
-  string attr = 2;
-  // Optionally, the attr to evaluate can be provided as a path to a folder or a
-  // .nix file.  This is used by the HTTP service.
-  // buf:lint:ignore FIELD_LOWER_SNAKE_CASE
-  string attrAsPath = 3;
-}
-
-message ScanResponse {
-  // buf:lint:ignore FIELD_LOWER_SNAKE_CASE
-  repeated string depotPath = 1;
-  // buf:lint:ignore FIELD_LOWER_SNAKE_CASE
-  repeated string nixStorePath = 2;
-  // buf:lint:ignore FIELD_LOWER_SNAKE_CASE
-  repeated string corePkgsPath = 4;
-  // buf:lint:ignore FIELD_LOWER_SNAKE_CASE
-  repeated string otherPath = 3;
-
-  bytes derivation = 5;
-}
-
-message ArchiveRequest {
-  // buf:lint:ignore FIELD_LOWER_SNAKE_CASE
-  repeated string depotPath = 1;
-}
-
-message ArchiveChunk {
-  bytes chunk = 1;
-}
-
-service DepotScanService {
-  rpc Scan(ScanRequest) returns (ScanResponse);
-
-  rpc MakeArchive(ArchiveRequest) returns (stream ArchiveChunk);
-}
-
diff --git a/tools/depot-scanner/go.mod b/tools/depot-scanner/go.mod
deleted file mode 100644
index bdd22fc1ef01..000000000000
--- a/tools/depot-scanner/go.mod
+++ /dev/null
@@ -1,3 +0,0 @@
-module code.tvl.fyi/tools/depot-scanner
-
-go 1.14
diff --git a/tools/depot-scanner/main.go b/tools/depot-scanner/main.go
deleted file mode 100644
index 9171587be2b9..000000000000
--- a/tools/depot-scanner/main.go
+++ /dev/null
@@ -1,227 +0,0 @@
-package main
-
-import (
-	"bufio"
-	"flag"
-	"fmt"
-	"io"
-	"os"
-	"os/exec"
-	"strings"
-
-	pb "code.tvl.fyi/tools/depot-scanner/proto"
-)
-
-var nixInstantiatePath = flag.String("nix-bin", "/run/current-system/sw/bin/nix-instantiate", "path to nix-instantiate")
-var depotRoot = flag.String("depot", envOr("DEPOT_ROOT", "/depot/"), "path to tvl.fyi depot at current canon")
-var nixStoreRoot = flag.String("store-path", "/nix/store/", "prefix for all valid nix store paths")
-
-var modeFlag = flag.String("mode", modeArchive, "operation mode. valid values: tar, print")
-var onlyFlag = flag.String("only", "", "only enable the listed output types, comma separated. valid values: DEPOT, STORE, CORE, UNKNOWN")
-var relativeFlag = flag.Bool("relpath", false, "when printing paths, print them relative to the root of their path type")
-
-const (
-	modeArchive = "tar"
-	modePrint   = "print"
-)
-
-const (
-	// String that identifies a path as belonging to nix corepkgs.
-	corePkgsString = "/share/nix/corepkgs/"
-
-	depotTraceString = "trace: depot-scan: "
-)
-
-type fileScanType int
-
-const (
-	unknownPath fileScanType = iota
-	depotPath
-	nixStorePath
-	corePkgsPath
-)
-
-func launchNix(attr string) (*exec.Cmd, io.ReadCloser, io.ReadCloser, error) {
-	cmd := exec.Command(*nixInstantiatePath, "--trace-file-access", "-A", attr)
-	stdout, err := cmd.StdoutPipe()
-	if err != nil {
-		return nil, nil, nil, err
-	}
-	stderr, err := cmd.StderrPipe()
-	if err != nil {
-		stdout.Close()
-		return nil, nil, nil, err
-	}
-
-	err = cmd.Start()
-	if err != nil {
-		stdout.Close()
-		stderr.Close()
-		return nil, nil, nil, err
-	}
-
-	return cmd, stdout, stderr, nil
-}
-
-func categorizePath(path string) fileScanType {
-	if strings.HasPrefix(path, *nixStoreRoot) {
-		if strings.Contains(path, corePkgsString) {
-			return corePkgsPath
-		}
-		return nixStorePath
-	} else if strings.HasPrefix(path, *depotRoot) {
-		return depotPath
-	} else if strings.Contains(path, corePkgsString) {
-		return corePkgsPath
-	}
-	return unknownPath
-}
-
-func addPath(path string, out map[fileScanType]map[string]struct{}) {
-	cat := categorizePath(path)
-	if out[cat] == nil {
-		out[cat] = make(map[string]struct{})
-	}
-
-	out[cat][path] = struct{}{}
-}
-
-func consumeOutput(stdout, stderr io.ReadCloser) (map[fileScanType]map[string]struct{}, string, error) {
-	result := make(map[fileScanType]map[string]struct{})
-
-	scanner := bufio.NewScanner(stderr)
-	for scanner.Scan() {
-		line := scanner.Text()
-		if strings.HasPrefix(line, depotTraceString) {
-			addPath(strings.TrimPrefix(line, depotTraceString), result)
-		} else {
-			// print remaining stderr output of nix-instantiate
-			// to prevent silent swallowing of possible important
-			// error messages (e.g. about command line interface changes)
-			fmt.Fprintf(os.Stderr, "nix-inst> %s\n", line)
-		}
-	}
-	if scanner.Err() != nil {
-		return nil, "", scanner.Err()
-	}
-
-	// Get derivation path
-	derivPath := ""
-	scanner = bufio.NewScanner(stdout)
-	for scanner.Scan() {
-		line := scanner.Text()
-		if strings.HasPrefix(line, *nixStoreRoot) {
-			derivPath = line
-			// consume the rest of the output
-		}
-	}
-	if scanner.Err() != nil {
-		return nil, "", scanner.Err()
-	}
-
-	return result, derivPath, nil
-}
-
-func main() {
-	flag.Parse()
-
-	checkDepotRoot()
-
-	enabledPathTypes := make(map[pb.PathType]bool, 4)
-	if len(*onlyFlag) > 0 {
-		enabledOutputs := strings.Split(*onlyFlag, ",")
-		for _, v := range enabledOutputs {
-			i, ok := pb.PathType_value[strings.ToUpper(v)]
-			if !ok {
-				fmt.Fprintln(os.Stderr, "warning: unrecognized PathType name: ", v)
-				continue
-			}
-			enabledPathTypes[pb.PathType(i)] = true
-		}
-	} else {
-		// Default
-		enabledPathTypes = map[pb.PathType]bool{
-			pb.PathType_UNKNOWN: true,
-			pb.PathType_DEPOT:   true,
-			pb.PathType_STORE:   true,
-			pb.PathType_CORE:    true,
-		}
-	}
-
-	cmd, stdout, stderr, err := launchNix(flag.Arg(0))
-	if err != nil {
-		panic(fmt.Errorf("could not launch nix: %w", err))
-	}
-	results, derivPath, err := consumeOutput(stdout, stderr)
-	if err != nil {
-		err2 := cmd.Wait()
-		if err2 != nil {
-			panic(fmt.Errorf("nix-instantiate failed: %w\nadditionally, while reading output: %w", err2, err))
-		}
-		panic(fmt.Errorf("problem reading nix output: %w", err))
-	}
-	err = cmd.Wait()
-	if err != nil {
-		panic(fmt.Errorf("nix-instantiate failed: %w", err))
-	}
-
-	_ = derivPath
-
-	if *modeFlag == "print" {
-		if enabledPathTypes[pb.PathType_STORE] {
-			for k, _ := range results[nixStorePath] {
-				if *relativeFlag {
-					k = strings.TrimPrefix(k, *nixStoreRoot)
-					k = strings.TrimPrefix(k, "/")
-				}
-				fmt.Println(k)
-			}
-		}
-		if enabledPathTypes[pb.PathType_DEPOT] {
-			for k, _ := range results[depotPath] {
-				if *relativeFlag {
-					k = strings.TrimPrefix(k, *depotRoot)
-					k = strings.TrimPrefix(k, "/")
-				}
-				fmt.Println(k)
-			}
-		}
-		if enabledPathTypes[pb.PathType_CORE] {
-			for k, _ := range results[corePkgsPath] {
-				// TODO relativeFlag
-				fmt.Println(k)
-			}
-		}
-		if enabledPathTypes[pb.PathType_UNKNOWN] {
-			for k, _ := range results[unknownPath] {
-				fmt.Println(k)
-			}
-		}
-	} else {
-		panic("unimplemented")
-	}
-}
-
-func envOr(envVar, def string) string {
-	v := os.Getenv(envVar)
-	if v == "" {
-		return def
-	}
-	return v
-}
-
-func checkDepotRoot() {
-	if *depotRoot == "" {
-		fmt.Fprintln(os.Stderr, "error: DEPOT_ROOT / -depot not set")
-		os.Exit(2)
-	}
-	_, err := os.Stat(*depotRoot)
-	if os.IsNotExist(err) {
-		fmt.Fprintf(os.Stderr, "error: %q does not exist\ndid you forget to set DEPOT_ROOT / --depot ?\n", *depotRoot)
-		os.Exit(1)
-	} else if err != nil {
-		fmt.Fprintf(os.Stderr, "error: could not stat %q: %v\n", *depotRoot, err)
-		os.Exit(1)
-	}
-
-}
diff --git a/tools/tvlc/OWNERS b/tools/tvlc/OWNERS
deleted file mode 100644
index 34c668e2fbf5..000000000000
--- a/tools/tvlc/OWNERS
+++ /dev/null
@@ -1 +0,0 @@
-riking
diff --git a/tools/tvlc/common.sh b/tools/tvlc/common.sh
deleted file mode 100644
index fe7605857fd3..000000000000
--- a/tools/tvlc/common.sh
+++ /dev/null
@@ -1,33 +0,0 @@
-#!/bin/bash
-
-set -eu
-set -o pipefail
-
-source path-scripts
-
-XDG_DATA_HOME="${XDG_DATA_HOME:-$HOME/.local/share}"
-tvlc_root="$XDG_DATA_HOME/tvlc"
-
-nice_checkout_root=
-if [ -f "$tvlc_root"/nice_checkout_root ]; then
-  nice_checkout_root="$(cat "$tvlc_root"/nice_checkout_root)"
-fi
-nice_checkout_root="${nice_checkout_root:-$HOME/tvlc}"
-
-depot_root=
-if [ -f "$tvlc_root/depot_root" ]; then
-  depot_root="$(cat "$tvlc_root/depot_root")"
-fi
-if [ -d /depot ]; then
-  # don't require config on tvl nixos servers
-  depot_root="${depot_root:-/depot}"
-fi
-if [ -n "$depot_root" ]; then
-  export DEPOT_ROOT="$depot_root"
-fi
-
-if [ ! -d "$tvlc_root" ]; then
-  echo "tvlc: setup required"
-  echo "please run 'tvlc setup' from the depot root"
-  exit 1
-fi
diff --git a/tools/tvlc/default.nix b/tools/tvlc/default.nix
deleted file mode 100644
index a6f201485ff2..000000000000
--- a/tools/tvlc/default.nix
+++ /dev/null
@@ -1,51 +0,0 @@
-{ pkgs, depot, ... }:
-
-let
-  pathScripts = pkgs.writeShellScript "imports" ''
-    export tvix_instantiate="${depot.third_party.nix}/bin/nix-instantiate"
-    export depot_scanner="${depot.tools.depot-scanner}/bin/depot-scanner"
-  '';
-
-  # setup: git rev-parse --show-toplevel > $tvlc_root/depot_root
-  # setup: mkdir $tvlc_root/clients
-  # setup: echo 1 > $tvlc_root/next_clientid
-
-  commonsh = pkgs.stdenv.mkDerivation {
-    name = "common.sh";
-    src = ./common.sh;
-    doCheck = true;
-    unpackPhase = "true";
-    buildPhase = ''
-      substitute ${./common.sh} $out --replace path-scripts ${pathScripts}
-    '';
-    checkPhase = ''
-      ${pkgs.shellcheck}/bin/shellcheck $out ${pathScripts} && echo "SHELLCHECK OK"
-    '';
-    installPhase = ''
-      chmod +x $out
-    '';
-  };
-
-  tvlcNew = pkgs.stdenv.mkDerivation {
-    name = "tvlc-new";
-    src = ./tvlc-new;
-    doCheck = true;
-
-    unpackPhase = "true";
-    buildPhase = ''
-      substitute ${./tvlc-new} $out --replace common.sh ${commonsh}
-    '';
-    checkPhase = ''
-      ${pkgs.shellcheck}/bin/shellcheck $out ${commonsh} ${pathScripts} && echo "SHELLCHECK OK"
-    '';
-    installPhase = ''
-      chmod +x $out
-    '';
-  };
-
-in
-{
-  inherit pathScripts;
-  inherit commonsh;
-  inherit tvlcNew;
-}
diff --git a/tools/tvlc/tvlc-new b/tools/tvlc/tvlc-new
deleted file mode 100755
index 4ef0df5d33b2..000000000000
--- a/tools/tvlc/tvlc-new
+++ /dev/null
@@ -1,103 +0,0 @@
-#!/bin/bash
-
-source common.sh
-
-set -eu
-set -o pipefail
-
-function usage() {
-  echo "tvlc new [-n|--name CLIENTNAME] [derivation...]"
-  echo ""
-  cat <<EOF
-  The 'new' command creates a new git sparse checkout with the given name, and
-  contents needed to build the Nix derivation(s) specified on the command line.
-
-  Options:
-    -n/--name client-name: Sets the git branch and nice checkout name for the
-	workspace. If the option is not provided, the name will be based on the
-	first non-option command-line argument.
-    --branch branch-name: Sets the git branch name only.
-EOF
-}
-
-checkout_name=
-branch_name=
-
-options=$(getopt -o 'n:' --long debug --long name: -- "$@")
-eval set -- "$options"
-while true; do
-  case "$1" in
-  -h)
-    usage
-    exit 0
-    ;;
-  -v)
-    version
-    exit 0
-    ;;
-  -n|--name)
-    shift
-    checkout_name="$1"
-    if [ -z "$branch_name" ]; then
-      branch_name=tvlc-"$1"
-    fi
-    ;;
-  --branch)
-    shift
-    branch_name="$1"
-    ;;
-  --)
-    shift
-    break
-    ;;
-  esac
-  shift
-done
-
-if [ $# -eq 0 ]; then
-  echo "error: workspace name, target derivations required"
-  exit 1
-fi
-
-if [ -z "$checkout_name" ]; then
-  # TODO(riking): deduce
-  echo "error: workspace name (-n) required"
-  exit 1
-fi
-
-if [ -d "$nice_checkout_root/$checkout_name" ]; then
-  echo "error: checkout $checkout_name already exists"
-  # nb: shellescape checkout_name because we expect the user to copy-paste it
-  # shellcheck disable=SC1003
-  echo "consider deleting it with tvlc remove '${checkout_name/'/\'}'"
-  exit 1
-fi
-if [ -f "$DEPOT_ROOT/.git/refs/heads/$branch_name" ]; then
-  echo "error: branch $branch_name already exists in git"
-  # shellcheck disable=SC1003
-  echo "consider deleting it with cd $DEPOT_ROOT; git branch -d '${checkout_name/'/\'}'"
-  exit 1
-fi
-
-# The big one: call into Nix to figure out what paths the desired derivations depend on.
-readarray -t includedPaths < <("$depot_scanner" --mode 'print' --only 'DEPOT' --relpath --depot "$DEPOT_ROOT" --nix-bin "$tvix_instantiate" "$@")
-
-# bash math
-checkout_id=$(("$(cat "$tvlc_root/next_clientid")"))
-next_checkout_id=$(("$checkout_id"+1))
-echo "$next_checkout_id" > "$tvlc_root/next_clientid"
-
-checkout_dir="$tvlc_root/clients/$checkout_id"
-mkdir "$checkout_dir"
-cd "$DEPOT_ROOT"
-git worktree add --no-checkout -b "$branch_name" "$checkout_dir"
-# BUG: git not creating the /info/ subdir
-mkdir "$DEPOT_ROOT/.git/worktrees/$checkout_id/info"
-
-cd "$checkout_dir"
-git sparse-checkout init --cone
-git sparse-checkout set "${includedPaths[@]}"
-
-ln -s "$checkout_dir" "$nice_checkout_root"/"$checkout_name"
-
-echo "$nice_checkout_root/$checkout_name"