nixpkgs/pkgs/os-specific/linux/procps-ng/default.nix
Sergei Trofimovich 4cac65085c procps: fix watchOnly = true; build
Without the change the build fails as:

    $ nix build --impure --expr 'with import ./. {}; procps.override { withSystemd = false; watchOnly = true; }' -L
    ...
    procps> build flags: -j16 SHELL=.../bash usrbin_execdir=\$\(out\)/bin watch PKG_LDFLAGS=
    procps> make: *** No rule to make target 'watch'.  Stop.

While at it dropped unused `PKG_LDFLAGS=` flag.
2024-10-17 10:54:02 +01:00

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{ lib
, stdenv
, fetchurl
, ncurses
, pkg-config
, autoreconfHook
# `ps` with systemd support is able to properly report different
# attributes like unit name, so we want to have it on linux.
, withSystemd ? lib.meta.availableOn stdenv.hostPlatform systemd
, systemd
# procps is mostly Linux-only. Most commands require a running Linux
# system (or very similar like that found in Cygwin). The one
# exception is watch which is portable enough to run on pretty much
# any UNIX-compatible system.
, watchOnly ? !(stdenv.hostPlatform.isLinux || stdenv.hostPlatform.isCygwin)
, binlore
, procps
}:
stdenv.mkDerivation rec {
pname = "procps";
version = "4.0.4";
# The project's releases are on SF, but git repo on gitlab.
src = fetchurl {
url = "mirror://sourceforge/procps-ng/procps-ng-${version}.tar.xz";
hash = "sha256-IocNb+skeK22F85PCaeHrdry0mDFqKp7F9iJqWLF5C4=";
};
buildInputs = [ ncurses ]
++ lib.optional withSystemd systemd;
nativeBuildInputs = [ pkg-config autoreconfHook ];
makeFlags = [ "usrbin_execdir=$(out)/bin" ]
++ lib.optionals watchOnly [ "src/watch" ];
enableParallelBuilding = true;
# Too red; 8bit support for fixing https://github.com/NixOS/nixpkgs/issues/275220
configureFlags = [ "--disable-modern-top" "--enable-watch8bit" ]
++ lib.optional withSystemd "--with-systemd"
++ lib.optional stdenv.hostPlatform.isMusl "--disable-w"
++ lib.optionals (stdenv.hostPlatform != stdenv.buildPlatform) [
"ac_cv_func_malloc_0_nonnull=yes"
"ac_cv_func_realloc_0_nonnull=yes"
];
installPhase = lib.optionalString watchOnly ''
install -m 0755 -D src/watch $out/bin/watch
install -m 0644 -D man/watch.1 $out/share/man/man1/watch.1
'';
# no obvious exec in documented arguments; haven't trawled source
# to figure out what exec binlore hits on
passthru.binlore.out = binlore.synthesize procps ''
execer cannot bin/{ps,top,free}
'';
meta = with lib; {
homepage = "https://gitlab.com/procps-ng/procps";
description = "Utilities that give information about processes using the /proc filesystem";
priority = 11; # less than coreutils, which also provides "kill" and "uptime"
license = licenses.gpl2Plus;
platforms = platforms.unix;
maintainers = [ ];
};
}