fscrypt: update to 0.2.7 and include PAM module

The previous template used for fscrypt didn't include the fscrypt PAM
module, pam_fscrypt.so. This commit fixes this issue.

The /etc/pam.d/fscrypt config file, which is supposed to be created by
packagers to allow fscrypt to use the login password, wasn't included in
the package either. This commit also includes that file.

srcpkgs/fscrypt/files/pam_config

@@ -0,0 +1 @@
+auth required pam_unix.so

srcpkgs/fscrypt/template

@@ -1,14 +1,30 @@
 # Template file for 'fscrypt'
 pkgname=fscrypt
-version=0.2.6
+version=0.2.7
 revision=1
 build_style=go
 go_import_path=github.com/google/fscrypt
 go_package="${go_import_path}/cmd/fscrypt"
+hostmakedepends="m4"
 makedepends="pam-devel"
 short_desc="Tool for managing Linux filesystem encryption"
 maintainer="Andrea Brancaleoni <abc@pomel.me>"
 license="Apache-2.0"
 homepage="https://github.com/google/fscrypt"
 distfiles="https://github.com/google/fscrypt/archive/v${version}.tar.gz"
-checksum=bce54ebb716706150b759052665a29d01963d8df334ad9beb34105ce62d2de94
+checksum=08e7f1bb5481f5ee76a90d79b9d9e2632f167d43100438ba08bd637e2dfb0f22
+conf_files="/etc/pam.d/fscrypt"
+
+if [ "$XBPS_TARGET_WORDSIZE" = "32" ];
+then
+	broken="fscrypt can't be built for 32-bit targets"
+fi
+
+post_install() {
+	# build and install the PAM module
+	LDFLAGS= make PREFIX=/usr DESTDIR=${DESTDIR} install-pam
+	# remove Ubuntu specific pam-config files
+	rm -rf ${DESTDIR}/usr/share/pam-configs/
+	# add PAM config file
+	vinstall ${FILESDIR}/pam_config 644 etc/pam.d fscrypt
+}