netbsd.libpthread{,-headers}: Inline base.nix

It is just one line and thus not worth factoring out.

pkgs/os-specific/bsd/netbsd/pkgs/libpthread/base.nix

@@ -1 +0,0 @@
-{ path = "lib/libpthread"; }

pkgs/os-specific/bsd/netbsd/pkgs/libpthread/headers.nix

@@ -1,12 +1,10 @@
 { lib, mkDerivation }:
 
-mkDerivation (
-  import ./base.nix
-  // {
-    pname = "libpthread-headers";
-    installPhase = "includesPhase";
-    dontBuild = true;
-    noCC = true;
-    meta.platforms = lib.platforms.netbsd;
-  }
-)
+mkDerivation {
+  path = "lib/libpthread";
+  pname = "libpthread-headers";
+  installPhase = "includesPhase";
+  dontBuild = true;
+  noCC = true;
+  meta.platforms = lib.platforms.netbsd;
+}

pkgs/os-specific/bsd/netbsd/pkgs/libpthread/package.nix

@@ -7,31 +7,29 @@
   librt,
 }:
 
-mkDerivation (
-  import ./base.nix
-  // {
+mkDerivation {
+  path = "lib/libpthread";
 
-    libcMinimal = true;
+  libcMinimal = true;
 
-    outputs = [
-      "out"
-      "dev"
-      "man"
-    ];
+  outputs = [
+    "out"
+    "dev"
+    "man"
+  ];
 
-    SHLIBINSTALLDIR = "$(out)/lib";
+  SHLIBINSTALLDIR = "$(out)/lib";
 
-    # Hack around GCC's limits.h missing the include_next we want See
-    # https://gcc.gnu.org/legacy-ml/gcc/2003-10/msg01278.html
-    NIX_CFLAGS_COMPILE_BEFORE = "-isystem ${stdenvLibcMinimal.cc.libc.dev}/include";
+  # Hack around GCC's limits.h missing the include_next we want See
+  # https://gcc.gnu.org/legacy-ml/gcc/2003-10/msg01278.html
+  NIX_CFLAGS_COMPILE_BEFORE = "-isystem ${stdenvLibcMinimal.cc.libc.dev}/include";
 
-    extraPaths = [
-      "common"
-      libcMinimal.path
-      librt.path
-      "sys"
-    ];
+  extraPaths = [
+    "common"
+    libcMinimal.path
+    librt.path
+    "sys"
+  ];
 
-    meta.platforms = lib.platforms.netbsd;
-  }
-)
+  meta.platforms = lib.platforms.netbsd;
+}