treewide: get rid of musl stuff

pkgs/os-specific/linux/musl/fts-setup-hook.sh

@@ -1,4 +0,0 @@
-# See pkgs/build-support/setup-hooks/role.bash
-getHostRole
-
-export NIX_${role_pre}LDFLAGS+=" -lfts"

pkgs/os-specific/linux/musl/fts.nix

@@ -1,19 +0,0 @@
-{ stdenv, fetchFromGitHub, autoreconfHook, pkgconfig }:
-
-stdenv.mkDerivation rec {
-  name = "musl-fts-${version}";
-  version = "2017-01-13";
-  src = fetchFromGitHub {
-    owner = "pullmoll";
-    repo = "musl-fts";
-    rev = "0bde52df588e8969879a2cae51c3a4774ec62472";
-    sha256 = "1q8cpzisziysrs08b89wj0rm4p6dsyl177cclpfa0f7spjm3jg03";
-  };
-
-  nativeBuildInputs = [ autoreconfHook pkgconfig ];
-
-  setupHooks = [
-    ../../../build-support/setup-hooks/role.bash
-    ./fts-setup-hook.sh
-  ];
-}

pkgs/os-specific/linux/musl/getconf.nix

@@ -1,19 +0,0 @@
-{ stdenv, fetchurl }:
-
-stdenv.mkDerivation {
-  name = "musl-getconf";
-  src = fetchurl {
-    url = "https://raw.githubusercontent.com/alpinelinux/aports/48b16204aeeda5bc1f87e49c6b8e23d9abb07c73/main/musl/getconf.c";
-    sha256 = "0z14ml5343p5gapxw9fnbn2r72r7v2gk8662iifjrblh6sxhqzfq";
-  };
-
-  unpackPhase = ":";
-
-  buildPhase = ''$CC $src -o getconf'';
-  installPhase = ''
-    mkdir -p $out/bin
-    cp getconf $out/bin/
-  '';
-}
-
-

pkgs/os-specific/linux/musl/getent.nix

@@ -1,18 +0,0 @@
-{ stdenv, fetchurl }:
-
-stdenv.mkDerivation {
-  name = "musl-getent";
-  src = fetchurl {
-    url = "https://raw.githubusercontent.com/alpinelinux/aports/89a718d88ec7466e721f3bbe9ede5ffe58061d78/main/musl/getent.c";
-    sha256 = "0b4jqnsmv1hjgcz7db3vd61k682aphl59c3yhwya2q7mkc6g48xk";
-  };
-
-  unpackPhase = ":";
-
-  buildPhase = ''$CC $src -o getent'';
-  installPhase = ''
-    mkdir -p $out/bin
-    cp getent $out/bin/
-  '';
-}
-

pkgs/tools/compression/xar/default.nix

@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, libxml2, openssl, zlib, bzip2, musl-fts }:
+{ stdenv, fetchurl, libxml2, openssl, zlib, bzip2, fts }:
 
 stdenv.mkDerivation rec {
   version = "1.6.1";
@@ -9,8 +9,7 @@ stdenv.mkDerivation rec {
     sha256 = "0ghmsbs6xwg1092v7pjcibmk5wkyifwxw6ygp08gfz25d2chhipf";
   };
 
-  buildInputs = [ libxml2 openssl zlib bzip2 ]
-    ++ stdenv.lib.optional stdenv.hostPlatform.isMusl musl-fts;
+  buildInputs = [ libxml2 openssl zlib bzip2 fts ];
 
   meta = {
     homepage    = https://mackyle.github.io/xar/;

pkgs/top-level/all-packages.nix

@@ -13843,9 +13843,6 @@ with pkgs;
   multipath-tools = callPackage ../os-specific/linux/multipath-tools { };
 
   musl = callPackage ../os-specific/linux/musl { };
-  musl-fts = callPackage ../os-specific/linux/musl/fts.nix { };
-  musl-getconf = callPackage ../os-specific/linux/musl/getconf.nix { };
-  musl-getent = callPackage ../os-specific/linux/musl/getent.nix { };
 
   nettools = if stdenv.isLinux then callPackage ../os-specific/linux/net-tools { }
              else unixtools.nettools;
@@ -21460,6 +21457,8 @@ with pkgs;
                       mount wall hostname more sysctl getconf
                       getent;
 
+  fts = if hostPlatform.isMusl then netbsd.fts else null;
+
   libbsd = netbsd.compat;
 
   inherit (recurseIntoAttrs (callPackages ../os-specific/bsd { }))

pkgs/top-level/unix-tools.nix

@@ -50,14 +50,14 @@ let
       linux = pkgs.utillinux;
     };
     getconf = {
-      linux = if hostPlatform.isMusl then pkgs.musl-getconf
-              else lib.getBin stdenv.cc.libc;
+      linux = if hostPlatform.isGNU then lib.getBin pkgs.glibc
+              else pkgs.netbsd.getconf;
       darwin = pkgs.darwin.system_cmds;
     };
     getent = {
-      linux = if hostPlatform.isMusl then pkgs.musl-getent
-              # This may not be right on other platforms, but preserves existing behavior
-              else /* if hostPlatform.libc == "glibc" then */ pkgs.glibc.bin;
+      linux = if hostPlatform.isGNU then lib.getBin pkgs.glibc
+              else pkgs.netbsd.getent;
+      darwin = pkgs.netbsd.getent;
     };
     getopt = {
       linux = pkgs.utillinux;