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Updated Gemserv Setup

This is a follow up on my previous gemlog where I described my setup of `gemserv` on NixOS.

2020-06-04 My Server Setup with NixOS

The other day int 80h reached out to me to let me know that Cargo.lock is now part of the repository. I took this as an opportunity to upgrade to the latest version of `gemserv`. Unfortunately I couldn't completely avoid patching.

First my updated derivation:

gemserv = pkgs.rustPlatform.buildRustPackage rec {
	name = "gemserv";
	src = pkgs.fetchgit {
			url = "git://80h.dev/gemserv.git";
			rev = "cb4ee956200c4de5e02f516fb0198188c12f5551";
			sha256 = "1kpmp99fjhkzdy8wd64jk1gpv471m92lpv0bn49xkn6nxkn8mp51";
	};

	cargoSha256 = "0p6pcinyh9iya9g2rmkjn4kms3scy8w4np8njjc4ynbrwzmzil31";
	buildInputs = with pkgs; [ pkg-config openssl ];
	patches = [ ./cfg-inside-if.patch ];
};

I also removed the the Let's Encrypt setup and moved the certificates to a fixed location. My plan is to switch to a self signed certificate as soon as the old one expires. There is currently a still ongoing debate about best practices. I will see what I have to do when it's time to update. My configuration now looks like this:

	gemserv_conf = pkgs.writeText "config.toml" ''
port = 1965
host = "::"
log = "info"

[[server]]
hostname = "otrn.org"
dir = "/var/gemini"
cert = "/var/lib/secrets/otrn.org/fullchain.pem"
key = "/var/lib/secrets/otrn.org/key.pem"
index = "index.gmi"
cgi = true
usrdir = false
	'';

Patch

When building this configuration I got "attributes are not yet allowed on `if` expressions" errors. I suspect that the rust compiler in NixOS stable (rustc-1.43.0) is not recent enough. The attribute in question is concerns the presence of the cgi option. Since I want to use cgi anyway I just removed the annotation. Hence, the patch is:

diff --git a/src/main.rs b/src/main.rs
index 995ef13..2721cbb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -290,7 +290,6 @@ async fn handle_connection(
 
     if !path.exists() {
         // See if it's a subpath of a CGI script before returning NotFound
-        #[cfg(feature = "cgi")]
         if handle_cgi(&mut con, srv, &request, &url, &path).await? {
             return Ok(());
         }
@@ -329,7 +328,6 @@ async fn handle_connection(
         }
     }
 
-    #[cfg(feature = "cgi")]
     if handle_cgi(&mut con, srv, &request, &url, &path).await? {
         return Ok(());
     }

An alternative would be to use some overlay to get the latest rust compiler, but I'm not a big fan of adding third party repositories.

I'm reachable at 'gemini@otrn.org'.