cvs: support ssh access

hacky wrapper handles ssh issues in nix builders

pkgs/build-support/fetchcvs/builder.sh

@@ -1,5 +1,11 @@
 source $stdenv/setup
 
+(echo '#!/usr/bin/env sh'; \
+ echo 'echo $@'; \
+ echo 'ssh -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no "$@"') > ssh
+chmod +x ssh
+export CVS_RSH=$PWD/ssh
+
 # creating the export drictory and checking out there only to be able to
 # move the content without the root directory into $out ...
 # cvs -f -d "$url" export $tag -d "$out" "$module"

pkgs/build-support/fetchcvs/default.nix

@@ -3,18 +3,18 @@
 # tag="<tagname>" (get version by tag name)
 # If you don't specify neither one date="NOW" will be used (get latest)
 
-{stdenvNoCC, cvs}:
+{stdenvNoCC, cvs, openssh}:
 
 {cvsRoot, module, tag ? null, date ? null, sha256}:
 
 stdenvNoCC.mkDerivation {
   name = "cvs-export";
   builder = ./builder.sh;
-  nativeBuildInputs = [cvs];
+  nativeBuildInputs = [cvs openssh];
 
   outputHashAlgo = "sha256";
   outputHashMode = "recursive";
   outputHash = sha256;
-  
+
   inherit cvsRoot module sha256 tag date;
 }