Depend on a bazel-built mksquashfs

appimage/private/tool/BUILD

@@ -14,25 +14,12 @@ copy_file(
     is_executable = True,
 )
 
-copy_file(
-    name = "mksquashfs_copy",
-    src = select({
-        "@platforms//cpu:arm64": "@mksquashfs_aarch64//file",
-        "@platforms//cpu:armv7e-m": "@mksquashfs_armhf//file",
-        "@platforms//cpu:i386": "@mksquashfs_i686//file",
-        "@platforms//cpu:x86_64": "@mksquashfs_x86_64//file",
-    }),
-    out = "mksquashfs",
-    allow_symlink = True,
-    is_executable = True,
-)
-
 py_library(
     name = "mkappimage",
     srcs = ["mkappimage.py"],
     data = [
         ":appimage_runtime",
-        ":mksquashfs",
+        "@squashfs-tools//:mksquashfs",
     ],
     visibility = ["//visibility:public"],
     deps = ["@rules_python//python/runfiles"],

appimage/private/tool/mkappimage.py

@@ -12,7 +12,7 @@
 from rules_python.python.runfiles import runfiles
 
 APPIMAGE_RUNTIME = Path(runfiles.Create().Rlocation("rules_appimage/appimage/private/tool/appimage_runtime"))
-MKSQUASHFS = Path(runfiles.Create().Rlocation("rules_appimage/appimage/private/tool/mksquashfs"))
+MKSQUASHFS = Path(runfiles.Create().Rlocation("squashfs-tools/mksquashfs"))
 
 
 class AppDirParams(NamedTuple):

deps.bzl

@@ -8,10 +8,6 @@ _SHAS = {
     "appimage_runtime_armhf": "dc6a546bd38a2df4cc6b14b0f2bcf925b0452e8a70d05b6027a631d60d26039b",
     "appimage_runtime_i686": "480017cfe6fa81785954c4ea39e4d06bc3b8fc287a55082ae781069c5d399116",
     "appimage_runtime_x86_64": "b86ac7572bb0b3ead120b09430a9dbeadde2f76ae54c1e30659cb54992d60ec1",
-    "mksquashfs_aarch64": "9cbe4cf6d6b83ac906cd4232192e532493285d2a499ebc31b6d7536957dcbf21",
-    "mksquashfs_armhf": "36e95cc77948cb74b1496ddcda3540b7265d734a022854434693a2fcd3c5bd32",
-    "mksquashfs_i686": "55f8a7f915bf2b526148d7ed393787f683db59b69e0a4ec4e5d6345d999ee0e2",
-    "mksquashfs_x86_64": "64a10d2f0dbd0c49753d10fef1afe615d4936794a942f40792f4fa3016199d6c",
 }
 
 def rules_appimage_deps():
@@ -26,6 +22,15 @@ def rules_appimage_deps():
         ],
     )
 
+    maybe(
+        http_archive,
+        name = "squashfs-tools",
+        build_file = "//third_party:squashfs-tools.BUILD",
+        sha256 = "94201754b36121a9f022a190c75f718441df15402df32c2b520ca331a107511c",
+        strip_prefix = "squashfs-tools-4.6.1/squashfs-tools",
+        url = "https://github.com/plougher/squashfs-tools/archive/refs/tags/4.6.1.tar.gz",
+    )
+
     for arch in ("aarch64", "armhf", "i686", "x86_64"):
         name = "appimage_runtime_" + arch
         maybe(
@@ -36,18 +41,19 @@ def rules_appimage_deps():
             urls = ["https://github.com/lalten/type2-runtime/releases/download/build-2022-10-03-c5c7b07/runtime-{}".format(arch)],
         )
 
-        name = "mksquashfs_" + arch
-        maybe(
-            http_file,
-            name = name,
-            executable = True,
-            sha256 = _SHAS[name],
-            urls = ["https://github.com/lalten/static-tools/releases/download/build-2022-10-02-970eff7/mksquashfs-{}".format(arch)],
-        )
-
     maybe(
         http_file,
         name = "appimagetool.png",
         sha256 = "0c23daaf7665216a8e8f9754c904ec18b2dfa376af2479601a571e504239fae6",
         urls = ["https://raw.githubusercontent.com/AppImage/AppImageKit/b51f685/resources/appimagetool.png"],
     )
+
+    # zstd is a dep of squashfs-tools
+    maybe(
+        http_archive,
+        name = "zstd",
+        build_file = "//third_party:zstd.BUILD",
+        sha256 = "9c4396cc829cfae319a6e2615202e82aad41372073482fce286fac78646d3ee4",
+        strip_prefix = "zstd-1.5.5",
+        url = "https://github.com/facebook/zstd/releases/download/v1.5.5/zstd-1.5.5.tar.gz",
+    )

tests/test_appimage.py

@@ -1,9 +1,9 @@
 """Test appimages as data deps."""
 
+import os
 import subprocess
 import sys
 from pathlib import Path
-import os
 
 import pytest
 

third_party/squashfs-tools.BUILD

@@ -0,0 +1,56 @@
+load("@rules_cc//cc:defs.bzl", "cc_binary", "cc_library")
+
+cc_library(
+    name = "common",
+    srcs = glob(
+        [
+            "*.c",
+            "*.h",
+        ],
+        exclude = [
+            "mksquashfs.c",
+            "unsquash*",
+            "lz4*",
+            "lzma*",
+            "lzo*",
+            "xz*",
+        ],
+    ),
+    hdrs = ["squashfs_fs.h"],
+    defines = [
+        'COMP_DEFAULT=\\"gzip\\"',
+        'DATE=\\"redacted\\"',
+        'VERSION=\\"redacted\\"',
+        'YEAR=\\"redacted\\"',
+        "_FILE_OFFSET_BITS=64",
+        "_GNU_SOURCE",
+        "_LARGEFILE_SOURCE",
+        "GZIP_SUPPORT",
+        "REPRODUCIBLE_DEFAULT",
+        "XATTR_DEFAULT",
+        "XATTR_SUPPORT",
+        "ZSTD_SUPPORT",
+    ],
+    deps = [
+        "@bazel_tools//third_party/zlib",
+        "@zstd",
+    ],
+)
+
+cc_binary(
+    name = "mksquashfs",
+    srcs = [
+        "mksquashfs.c",
+        "mksquashfs.h",
+        "mksquashfs_error.h",
+    ],
+    visibility = ["//visibility:public"],
+    deps = [":common"],
+)
+
+cc_binary(
+    name = "unsquashfs",
+    srcs = glob(["unsquash*"]),
+    visibility = ["//visibility:public"],
+    deps = [":common"],
+)

third_party/zstd.BUILD

@@ -0,0 +1,27 @@
+load("@rules_cc//cc:defs.bzl", "cc_library")
+
+cc_library(
+    name = "zstd",
+    srcs = glob([
+        "lib/common/*.c",
+        "lib/common/*.h",
+        "lib/compress/*.c",
+        "lib/compress/*.h",
+        "lib/decompress/*.c",
+        "lib/decompress/*.h",
+        "lib/decompress/*.S",
+        "lib/dictBuilder/*.c",
+        "lib/dictBuilder/*.h",
+    ]),
+    hdrs = [
+        "lib/zdict.h",
+        "lib/zstd.h",
+        "lib/zstd_errors.h",
+    ],
+    defines = [
+        "XXH_NAMESPACE=ZSTD_",
+        "ZSTD_MULTITHREAD",
+    ],
+    strip_include_prefix = "lib",
+    visibility = ["//visibility:public"],
+)