From 6e903b7b7e0648ce7b22aa4ae1cf054afeafa56f Mon Sep 17 00:00:00 2001
From: Justin Bedo <cu@cua0.org>
Date: Fri, 15 Sep 2023 14:08:30 +1000
Subject: [PATCH] rPackages.pandoc: fix pandoc linking

---
 pkgs/development/r-modules/default.nix | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/r-modules/default.nix b/pkgs/development/r-modules/default.nix
index c6687172452a..60aaf0de1eb8 100644
--- a/pkgs/development/r-modules/default.nix
+++ b/pkgs/development/r-modules/default.nix
@@ -603,7 +603,6 @@ let
     ncdfFlow = [ pkgs.zlib.dev ];
     proj4 = [ pkgs.proj.dev ];
     rtmpt = [ pkgs.gsl ];
-    rmarkdown = [ pkgs.pandoc ];
     mixcat = [ pkgs.gsl ];
     libstableR = [ pkgs.gsl ];
     landsepi = [ pkgs.gsl ];
@@ -1362,6 +1361,13 @@ let
       patches = [ ./patches/rhdf5.patch ];
     });
 
+    rmarkdown = old.rmarkdown.overrideAttrs (_: {
+      preConfigure = ''
+        substituteInPlace R/pandoc.R \
+          --replace '"~/opt/pandoc"' '"~/opt/pandoc", "${pkgs.pandoc}/bin"'
+      '';
+    });
+
     redland = old.redland.overrideAttrs (_: {
       PKGCONFIG_CFLAGS="-I${pkgs.redland}/include -I${pkgs.librdf_raptor2}/include/raptor2 -I${pkgs.librdf_rasqal}/include/rasqal";
       PKGCONFIG_LIBS="-L${pkgs.redland}/lib -L${pkgs.librdf_raptor2}/lib -L${pkgs.librdf_rasqal}/lib -lrdf -lraptor2 -lrasqal";