Hello, > >If I first to "nix-env -i openssh --arg withKerberos false" > > > >and then "nix-env -i openssh --arg withKerberos true" > > > >Then openssh is not replaced. It seems that the hash do not depends on > >argument ? > >How can I fix this ? > > I think that "nix-env -iA openssh --arg withKerberos false" should > be the way. IMO --arg only makes sense with attribute paths.
I failed to do that too. I think I am doing something wrong. I attach my modify version of openssh/default.nix. Note: I made the name depend on the value of withKerberos to see what I am doing. If I create a specific entry for openssh with kerberos in all_packages.nix, it works. (i.e. nix-env -iA openssKrb5 works) If I try to install via nix-env -iA openssh --arg withKerberos false, the variable withKerberos is not transmitted. Here is also the piece of definition I have in all_packages.nix: > >Another related question: how should we make this kind of options visible > >from the end user ? > >Adding something in all-packages.nix ? > > One could add the other version to all-packages.nix, but that's > probably redundant. Most people will be satisfied by a well-chosen > default, and the rest can override it in ~/.nixpkgs/config.nix or > similar. I did not bind how to do that. The examples I found via google were all about compilation environment, not configuration of package, so I failed to guess what to add in ~/.nixpkgs/config.nix And by the way, I prefer a systeme wide installation of openssh, so I would prefer to add something in /etc/nixos ? Thanks for the help, Christophe
{ stdenv, fetchurl, zlib, openssl, perl, libedit, pkgconfig, pam , etcDir ? null , hpnSupport ? false , withKerberos ? false , kerberos }: assert withKerberos -> kerberos != null; let hpnSrc = fetchurl { url = http://nixos.org/tarballs/openssh-6.1p1-hpn13v14.diff.gz; sha256 = "14das6lim6fxxnx887ssw76ywsbvx3s4q3n43afgh5rgvs4xmnnq"; }; in stdenv.mkDerivation rec { basename = "openssh-6.2p1"; # just temporary, to see what I am doing name = basename + (if withKerberos then "-krb5" else ""); src = fetchurl { url = "ftp://ftp.nl.uu.net/pub/OpenBSD/OpenSSH/portable/${basename}.tar.gz"; sha1 = "8824708c617cc781b2bb29fa20bd905fd3d2a43d"; }; prePatch = stdenv.lib.optionalString hpnSupport '' gunzip -c ${hpnSrc} | patch -p1 export NIX_LDFLAGS="$NIX_LDFLAGS -lgcc_s" ''; patches = [ ./locale_archive.patch # Upstream fix for gratuitous "no such identity" warnings. ./fix-identity-warnings.patch ]; buildInputs = [ zlib openssl libedit pkgconfig pam ] ++ (if withKerberos then [ kerberos ] else []) ; # I set --disable-strip because later we strip anyway. And it fails to strip # properly when cross building. configureFlags = '' --with-mantype=man --with-libedit=yes --disable-strip ${if pam != null then "--with-pam" else "--without-pam"} ${if etcDir != null then "--sysconfdir=${etcDir}" else ""} ${if withKerberos then "--with-kerberos5=${kerberos}" else ""} ''; preConfigure = '' configureFlags="$configureFlags --with-privsep-path=$out/empty" mkdir -p $out/empty ''; postInstall = '' # Install ssh-copy-id, it's very useful. cp contrib/ssh-copy-id $out/bin/ chmod +x $out/bin/ssh-copy-id cp contrib/ssh-copy-id.1 $out/share/man/man1/ mkdir -p $out/etc/ssh cp moduli $out/etc/ssh/ ''; installTargets = "install-nosysconf"; meta = { homepage = http://www.openssh.org/; description = "An implementation of the SSH protocol"; license = "bsd"; platforms = stdenv.lib.platforms.linux; maintainers = stdenv.lib.maintainers.eelco; }; }
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