treewide: Start to break up static overlay

We can use use `stdenv.hostPlatform.isStatic` instead, and move the
logic per package. The least opionated benefit of this is that it makes
it much easier to replace packages with modified ones, as there is no
longer any issue of overlay order.

CC @FRidh @matthewbauer

pkgs/top-level/static.nix

@@ -112,87 +112,23 @@ in {
     enableApp = false;
   };
 
-  ncurses = super.ncurses.override {
-    enableStatic = true;
-  };
-  libxml2 = super.libxml2.override ({
-    enableShared = false;
-    enableStatic = true;
-  } // optionalAttrs super.stdenv.hostPlatform.isDarwin {
-    pythonSupport = false;
-  });
   zlib = super.zlib.override {
-    static = true;
-    shared = false;
-    splitStaticOutput = false;
-
     # Don’t use new stdenv zlib because
     # it doesn’t like the --disable-shared flag
     stdenv = super.stdenv;
   };
-  xz = super.xz.override {
-    enableStatic = true;
-  };
-  busybox = super.busybox.override {
-    enableStatic = true;
-  };
-  libiberty = super.libiberty.override {
-    staticBuild = true;
-  };
-  libpfm = super.libpfm.override {
-    enableShared = false;
-  };
-  ipmitool = super.ipmitool.override {
-    static = true;
-  };
-  neon = super.neon.override {
-    static = true;
-    shared = false;
-  };
-  fmt = super.fmt.override {
-    enableShared = false;
-  };
   gifsicle = super.gifsicle.override {
     static = true;
   };
-  bzip2 = super.bzip2.override {
-    linkStatic = true;
-  };
-  optipng = super.optipng.override {
-    static = true;
-  };
-  openblas = super.openblas.override {
-    enableStatic = true;
-    enableShared = false;
-  };
-  mkl = super.mkl.override { enableStatic = true; };
-  nix = super.nix.override { enableStatic = true; };
-  nixUnstable = super.nixUnstable.override { enableStatic = true; };
-  openssl = (super.openssl_1_1.override { static = true; }).overrideAttrs (o: {
+  openssl = super.openssl_1_1.overrideAttrs (o: {
     # OpenSSL doesn't like the `--enable-static` / `--disable-shared` flags.
     configureFlags = (removeUnknownConfigureFlags o.configureFlags);
   });
-  arrow-cpp = super.arrow-cpp.override {
-    enableShared = false;
-  };
   boost = super.boost.override {
-    enableStatic = true;
-    enableShared = false;
-
     # Don’t use new stdenv for boost because it doesn’t like the
     # --disable-shared flag
     stdenv = super.stdenv;
   };
-  thrift = super.thrift.override {
-    static = true;
-    twisted = null;
-  };
-  gmp = super.gmp.override {
-    withStatic = true;
-  };
-  gflags = super.gflags.override {
-    enableShared = false;
-  };
   cdo = super.cdo.override {
     enable_all_static = true;
   };
@@ -202,13 +138,6 @@ in {
   crc32c = super.crc32c.override {
     staticOnly = true;
   };
-  parted = super.parted.override {
-    enableStatic = true;
-  };
-  libiconvReal = super.libiconvReal.override {
-    enableShared = false;
-    enableStatic = true;
-  };
   perl = super.perl.override {
     # Don’t use new stdenv zlib because
     # it doesn’t like the --disable-shared flag
@@ -220,24 +149,9 @@ in {
   snappy = super.snappy.override {
     static = true;
   };
-  lz4 = super.lz4.override {
-    enableShared = false;
-    enableStatic = true;
-  };
   libressl = super.libressl.override {
     buildShared = false;
   };
-  libjpeg_turbo = super.libjpeg_turbo.override {
-    enableStatic = true;
-    enableShared = false;
-  };
-
-  darwin = super.darwin // {
-    libiconv = super.darwin.libiconv.override {
-      enableShared = false;
-      enableStatic = true;
-    };
-  };
 
   kmod = super.kmod.override {
     withStatic = true;
@@ -260,21 +174,6 @@ in {
     static = true;
   };
 
-  llvmPackages_8 = super.llvmPackages_8 // {
-    libraries = super.llvmPackages_8.libraries // rec {
-      libcxxabi = super.llvmPackages_8.libraries.libcxxabi.override {
-        enableShared = false;
-      };
-      libcxx = super.llvmPackages_8.libraries.libcxx.override {
-        enableShared = false;
-        inherit libcxxabi;
-      };
-      libunwind = super.llvmPackages_8.libraries.libunwind.override {
-        enableShared = false;
-      };
-    };
-  };
-
   ocaml-ng = self.lib.mapAttrs (_: set:
     if set ? overrideScope' then set.overrideScope' ocamlStaticAdapter else set
   ) super.ocaml-ng;
@@ -289,13 +188,6 @@ in {
   # Note: -static doesn’t work on darwin
   libev = super.libev.override { static = !super.stdenv.hostPlatform.isDarwin; };
 
-  libexecinfo = super.libexecinfo.override { enableShared = false; };
-
-  tree-sitter = super.tree-sitter.override {
-    enableShared = false;
-    enableStatic = true;
-  };
-
   xorg = super.xorg.overrideScope' (xorgself: xorgsuper: {
     libX11 = xorgsuper.libX11.overrideAttrs (attrs: {
       depsBuildBuild = attrs.depsBuildBuild ++ [ (self.buildPackages.stdenv.cc.libc.static or null) ];
@@ -319,6 +211,4 @@ in {
       configureFlags = attrs.configureFlags ++ [ "--disable-shared" ];
     });
   });
-
-  libcap = super.libcap.override { pam = null; };
 }