fscrypt-experimental: 0.2.5 -> 0.2.6 (#79853)

Changelog: https://github.com/google/fscrypt/releases/tag/v0.2.6

pkgs/os-specific/linux/fscrypt/default.nix

@@ -1,22 +1,42 @@
-{ stdenv, buildGoPackage, fetchFromGitHub, pam }:
+{ stdenv, buildGoModule, fetchFromGitHub, gnum4, pam, fscrypt-experimental }:
 
 # Don't use this for anything important yet!
 
-buildGoPackage rec {
+buildGoModule rec {
   pname = "fscrypt";
-  version = "0.2.5";
-
-  goPackagePath = "github.com/google/fscrypt";
+  version = "0.2.6";
 
   src = fetchFromGitHub {
     owner = "google";
     repo = "fscrypt";
     rev = "v${version}";
-    sha256 = "1jf6363kc9id3ar93znlcglx3llgv01ccp3nlbamm98rm9dps4qk";
+    sha256 = "15pwhz4267kwhkv532k6wgjqfzawawdrrk6vnl017ys5s9ln51a8";
   };
 
+  postPatch = ''
+    substituteInPlace Makefile \
+      --replace 'TAG_VERSION := $(shell git describe --tags)' "" \
+      --replace '$(shell date)' '$(shell date --date="@0")' \
+      --replace "/usr/local" "$out"
+  '';
+
+  modSha256 = "110b647q6ljsg5gwlciqv4cddxmk332nahcrpidrpsiqs2yjv1md";
+
+  nativeBuildInputs = [ gnum4 ];
   buildInputs = [ pam ];
 
+  buildPhase = ''
+    make
+  '';
+
+  installPhase = ''
+    make install
+  '';
+
+  preFixup = ''
+    remove-references-to -t ${fscrypt-experimental.go} $out/lib/security/pam_fscrypt.so
+  '';
+
   meta = with stdenv.lib; {
     description =
       "A high-level tool for the management of Linux filesystem encryption";