# HG changeset patch
# User Franz Glasner <hg@dom66.de>
# Date 1511337557 -3600
# Node ID 094324510aa2b5fad76e382be59be19ab87a4b4a
# Parent  22b7c9e08b138c967cce14d30f2d07a6633fde3d
Got the shell $(<cmd>) syntax to work within make ${:!...!} variables.

\$$\(cmd) works.
`cmd` also works (of course).

diff -r 22b7c9e08b13 -r 094324510aa2 Makefile
--- a/Makefile	Wed Nov 22 08:54:51 2017 +0100
+++ b/Makefile	Wed Nov 22 08:59:17 2017 +0100
@@ -27,7 +27,7 @@
 HGREVISION=	${:!hg id -R "${SRC}" -q!}
 HGDATE=		${:!hg log -R "${SRC}" -r "${HGREVISION:S/+//}" --template '{date|isodatesec}'!}
 HGAUTHOR=	${:!hg log -R "${SRC}" -r "${HGREVISION:S/+//}" --template '{author|person}' | ${TR} ' ' '+'!}
-HGPATH=		${:!hg --config ui.paginate=never path -R "${SRC}" ${HGCANONICALPATH} || echo "file://`hg root`"!}
+HGPATH=		${:!hg --config ui.paginate=never path -R "${SRC}" ${HGCANONICALPATH} || echo "file://\$$\(hg root)"!}
 
 do-extract:
 	${MKDIR} ${WRKSRC}/bin