{ stdenv, fetchFromGitHub, zlib, xz , lz4 ? null , lz4Support ? false , zstd }: assert lz4Support -> (lz4 != null); stdenv.mkDerivation { pname = "squashfs"; version = "4.4dev_20180612"; src = fetchFromGitHub { owner = "plougher"; repo = "squashfs-tools"; sha256 = "1y53z8dkph3khdyhkmkmy0sg9p1n8czv3vj4l324nj8kxyih3l2c"; rev = "6e242dc95485ada8d1d0b3dd9346c5243d4a517f"; }; patches = [ # These patches ensures that mksquashfs output is reproducible. # See also https://reproducible-builds.org/docs/system-images/ # and https://github.com/NixOS/nixpkgs/issues/40144. ./0001-If-SOURCE_DATE_EPOCH-is-set-override-timestamps-with.patch ./0002-If-SOURCE_DATE_EPOCH-is-set-also-clamp-content-times.patch ./0003-remove-frag-deflator-thread.patch # This patch adds an option to pad filesystems (increasing size) in # exchange for better chunking / binary diff calculation. ./squashfs-tools-4.4-4k-align.patch ] ++ stdenv.lib.optional stdenv.isDarwin ./darwin.patch; buildInputs = [ zlib xz zstd ] ++ stdenv.lib.optional lz4Support lz4; preBuild = "cd squashfs-tools"; installFlags = "INSTALL_DIR=\${out}/bin"; makeFlags = [ "XZ_SUPPORT=1" "ZSTD_SUPPORT=1" ] ++ stdenv.lib.optional lz4Support "LZ4_SUPPORT=1"; meta = { homepage = http://squashfs.sourceforge.net/; description = "Tool for creating and unpacking squashfs filesystems"; platforms = stdenv.lib.platforms.unix; license = stdenv.lib.licenses.gpl2Plus; maintainers = with stdenv.lib.maintainers; [ ruuda ]; }; }