feat(users/Profpatsch): build attrset members on CI r/2282

Setting meta.targets to include all derivations in the different package
sets in Profpatsch's user folder makes them checked by CI until they do
the readTree refactor as promised.

To reduce code duplication we handle this in a simple function which is
exposed from nix.utils which may be a good place for depot specific bits
and bops we accumulate over time.

To get around the issue of too nested sets we perform the following
renames:

* users.Profpatsch.tests gets moved into its own directory
* users.Profpatsch.arglib.netencode now lives in its own file instead of
  the default.nix
* users.Profpatsch.netstring.tests gets moved into its own directory

Change-Id: Icd039c29d7760a711c1c53554504d6b0cd19e120
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2603
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>

1 files changed, 40 insertions, 0 deletions

diff --git a/users/Profpatsch/arglib/netencode.nix b/users/Profpatsch/arglib/netencode.nix
new file mode 100644
index 000000000000..6b568ab80d6e
--- /dev/null
+++ b/users/Profpatsch/arglib/netencode.nix
@@ -0,0 +1,40 @@
+{ depot, pkgs, lib, ... }:
+
+let
+  netencode = {
+    rust = depot.users.Profpatsch.writers.rustSimpleLib {
+      name = "arglib-netencode";
+      dependencies = [
+        depot.users.Profpatsch.execline.exec-helpers
+        depot.users.Profpatsch.netencode.netencode-rs
+      ];
+    } ''
+      extern crate netencode;
+      extern crate exec_helpers;
+
+      use netencode::{T};
+      use std::os::unix::ffi::OsStrExt;
+
+      pub fn arglib_netencode(prog_name: &str, env: Option<&std::ffi::OsStr>) -> T {
+          let env = match env {
+              None => std::ffi::OsStr::from_bytes("ARGLIB_NETENCODE".as_bytes()),
+              Some(a) => a
+          };
+          let t = match std::env::var_os(env) {
+              None => exec_helpers::die_user_error(prog_name, format!("could not read args, envvar {} not set", env.to_string_lossy())),
+              // TODO: good error handling for the different parser errors
+              Some(soup) => match netencode::parse::t_t(soup.as_bytes()) {
+                  Ok((remainder, t)) => match remainder.is_empty() {
+                      true => t,
+                      false => exec_helpers::die_environment_problem(prog_name, format!("arglib: there was some unparsed bytes remaining: {:?}", remainder))
+                  },
+                  Err(err) => exec_helpers::die_environment_problem(prog_name, format!("arglib parsing error: {:?}", err))
+              }
+          };
+          std::env::remove_var(env);
+          t
+      }
+    '';
+  };
+
+in depot.nix.utils.drvTargets netencode