Commit graph

12828 commits

Author SHA1 Message Date
sterni
1c0f89f4ca feat(web/bubblegum): report some errors to the user via HTTP
We can actually catch some errors that may be generated in bubblegum
applications where we can report them to the user in a way that doesn't
require curl -vv:

* Type errors in the status argument: By removing yants completely we
  not only (presumably) gain some performance, but also the ability to
  return an internal server error on an unexpected type instead of
  throwing.

* User generated evaluation errors: by using builtins.tryEval we can
  catch throws and asserts the user inserted when generating the body
  and report to the user that something went wrong. To do: also support
  for the headers.

Change-Id: I8363b9825c6c730e624eb8016a5482d63cbc1890
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2849
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
2021-04-05 10:54:32 +00:00
Vincent Ambo
cbd6f5bbae feat(tverskoy): Configure whitby binary cache
Change-Id: I51d4b42998d6005da15e4d0bed82062cd4e36fe9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2848
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 18:54:19 +00:00
Vincent Ambo
0f1d3de26f feat(whitby): Configure nix-serve on cache.tvl.su
Having a slow cache is better than having no cache.

Change-Id: Ie3cfcd4a2937d90b0e2ad899816bc31ae806631f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2847
Tested-by: BuildkiteCI
Reviewed-by: lukegb <lukegb@tvl.fyi>
Reviewed-by: sterni <sternenseemann@systemli.org>
2021-04-04 18:54:19 +00:00
Vincent Ambo
aae387456a chore(tazjin/tverskoy): Mount SD card on boot
Change-Id: Ifab7ec411f8dbd932aeee15d45ebd53e24917d04
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2846
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 18:25:58 +00:00
Profpatsch
e7c78570ed feat(users/Profpatsch/writers): make testing default for rustSimple
This way we don’t have to explicitely wrap the rust crate with a
`testRustSimple`, but it will be done automatically, unless `doCheck`
is set to `false`.

Change-Id: I32a81821eeff620e7da57332b0873495bb85a843
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2841
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
Reviewed-by: sterni <sternenseemann@systemli.org>
2021-04-04 15:16:23 +00:00
Griffin Smith
5319465f60 fix(panettone): Add email.lisp to source files
email.lisp was missing from the buildLisp derivaation's source files,
which meant that none of its definitions were being loaded into the
image even though the package was defined by packages.lisp.

As an aside, this really should've broken the build - we got a
style-warning in panettone.lisp for referencing the missing definitions,
but that only surfaced as a warning, and ended up breaking once deployed

Change-Id: Ie99c3efeef8e6943aa1f9cfc426957d622c2d718
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2845
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
2021-04-04 14:43:14 +00:00
Profpatsch
25ba2ef5f6 feat(third_party/rust-crates): default to 2018 rust edition
We override the default `buildRustCrate` with our default options.

Kinda amazing how many crates still default to the 2015 edition;
probably to be backwards compatible with older compilers?

Change-Id: Ic571f527b1575a03b8b58e6b75bcf12c4b9b7d9c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2842
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
2021-04-04 14:26:23 +00:00
Griffin Smith
808448682c feat(panettone): Add some more info to emails
Add a little bit more information to issue notification emails,
including the IDs of issues and links to the issues themselves.

Change-Id: Ia54209f936a37c6dbdb60ebff5bb8c1034cffc9a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2809
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 14:17:25 +00:00
Griffin Smith
6c78cb69c7 feat(panettone): Send notifications when issues are reopened
Send notifications both to IRC and email when issues are reopened after
being closed

Change-Id: I3a63419c6547ac28eeaafbe212a2a01a5fc2b5af
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2808
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 14:17:25 +00:00
Griffin Smith
606d2af2da feat(panettone): Send emails when issues are closed
Send notification emails to the same group of users who receive
notifications on issue comments when issues are marked as closed. This
also takes the opportunity to generalize issue notification emails a
bit, and lay the groundwork for (but not implement) explicit issue
subscriber lists.

Change-Id: Ie2572ed3ad0207d415b4c362438f772925e7a2c5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2807
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 14:17:25 +00:00
Griffin Smith
3ec15ec9f9 feat(panettone): Add a settings page
Add a user settings page, with a single checkbox that allows disabling
receiving all email notifications.

Change-Id: Ibef2a497cd59f93b695ff8b9cd36047e514e00c2
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2806
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 14:17:25 +00:00
Griffin Smith
8d3ab61e7c feat(panettone): Send email notifications for comments
When a user posts a comment on an issue, send email
notifications (respecting the enable-email-notifications setting) to the
author of that issue and all the other users who have commented on that
issue. Since the oauth & gmail API stuff that the relay does is slow,
this happens in a background thread.

Change-Id: Ic00c265deab1030d9ba64c29c9f56314dd179141
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2805
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 14:17:25 +00:00
Griffin Smith
349b98ccc8 feat(panettone): Add functions to send email notifications
Add a new package to panettone, :panettone.email with functions to send
email notifications to users through the SMTP relay on whitby,
respecting the value of `enable_email_notifications` on the
user_settings table.

Change-Id: Ia4ec65965abda06f1fadb178143d66bb8eae6482
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2804
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 14:17:25 +00:00
Griffin Smith
37d573479b feat(panettone): Add a user settings table
Add a new user-settings table and dao class, with a flag that allows an
individual user to disable receiving email notifications

Change-Id: I537bfca74490941934c0adc7328bcd6ed5c9c0b9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2803
Tested-by: BuildkiteCI
Reviewed-by: sterni <sternenseemann@systemli.org>
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 14:17:25 +00:00
lukegb
9551b628d0 revert(3p/gerrit): chore(3p/gerrit): update gerrit and plugins
This reverts commit f59c6214c4.

Reason for revert: new gerrit's JS appears to not have compiled correctly; rolling back until I can figure out why

Change-Id: If16fe341aad25bef30ed7be8c6ac49cadf2a732c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2821
Reviewed-by: lukegb <lukegb@tvl.fyi>
Tested-by: BuildkiteCI
2021-04-04 10:30:19 +00:00
Luke Granger-Brown
f59c6214c4 chore(3p/gerrit): update gerrit and plugins
Yeet.

Change-Id: I4de6453419f520a44af19d561a36d242195a64e9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2817
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-04 10:11:25 +00:00
sterni
e5b8bd2842 refactor(3p/rust-crates): use imported buildRustCrate everywhere
A bit less noisy in the definitions and the nix parser can already
detect it being misspelled.

Change-Id: I979da11471187e36cde5c015aaf654f925757a8b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2814
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-03 22:46:29 +00:00
sterni
abe1de4302 feat(3p/rust-crates): get dependencies from the depot fix point
I think it is good practice to always get dependencies from the depot
fix point if they are exposed. The reasoning for this is that if we
improve the support for overriding in depot, say by introducing a
depot.extend functions or even full blown overlay support, this will
already work as expected.

Change-Id: Ibb8dffcf32e8f46817a2db2da26139fabdce55bc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2770
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>
2021-04-03 22:46:15 +00:00
Vincent Ambo
9a1480d314 feat(tazjin/nix.svg): Add a manually cleaned up SVG Nix logo
Instead of ~500 lines, it's about ~50 and you can actually
individually address the lambdas and their colours.

I don't exactly know why I made this rather than going to bed, but it
might come in handy sometime.

Change-Id: I7aa25777ebac4a83fd3febb553fcad773836119b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2815
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2021-04-03 22:38:54 +00:00
sterni
0133fdc737 chore: move all 3p buildRustCrate derivations to //third_party
Profpatsch and me are basically the only users of
depot.users.Profpatsch.writers.rustSimple*. To pull in the odd
dependency we usually use buildRustCrate which is rather convenient.
However we've picked up the bad habit of inlining these in a let
somewhere instead of managing them in a more central location although
there has been an (unsuccesful) attempt at this in
//users/Profpatsch/rust-crates.nix.

This CL moves all buildRustCrate based derivations into
third_party.rust-crates and deletes any duplicate derivations we have
accumulated in the tree.

Change-Id: I8f68b95ebd546708e9af07dca36d72dba9ca8c77
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2769
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: Profpatsch <mail@profpatsch.de>
2021-04-03 22:16:35 +00:00
Luke Granger-Brown
3e7073f106 feat(3p/apereo-cas): add the LDAP DN to the list of attributes
Panettone currently uses the LDAP DN as the user key, so we collect it
here so that we can later make sure its exposed to Panettone.

Change-Id: Ia2048cb479a2afe6fe9f47181115ae7ec13dedf3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2811
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: glittershark <grfn@gws.fyi>
2021-04-03 21:51:58 +00:00
Luke Granger-Brown
85900e150e chore(3p/apereo-cas): move TVL config
There's some non-secret config that made its way into the secrets file.
This CL moves it into git so we can track it properly.

Change-Id: I3f5bf5e1f7addabb199997fb7b1f805b9157fbbe
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2810
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-03 21:51:58 +00:00
Luke Granger-Brown
8ae128af77 feat(monorepo-gerrit): use CAS for authentication
This drops the old LDAP configuration and uses CAS instead. All hail the
hypnotoad.

Change-Id: I515a213f09073bb52bfb75afe2988b935a076087
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2783
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-03 19:11:18 +00:00
Luke Granger-Brown
81a7bd4765 chore(3p/gerrit_plugins): init oauth
Add the OAuth gerrit plugin to our mini collection of Gerrit plugins.

This includes a patch to make the plugin work correctly with CAS 6.x,
which has changed the attributes into a JSON object with the attributes
nested inside, instead of a JSON list.

Change-Id: I4741f137cca9c8eb45b9ea660fb4cbf6962be9a4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2782
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-03 19:11:18 +00:00
Griffin Smith
ed7240ade5 feat(gs/home): Set up lieer for work email
Change-Id: I49d6c8450b87cc876e93cba150327b5612eeebc3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2801
Reviewed-by: glittershark <grfn@gws.fyi>
Tested-by: BuildkiteCI
2021-04-03 18:54:47 +00:00
Griffin Smith
e908ccdbbb feat(3p/lisp): Add cl-smtp
Change-Id: Idbf63e346b696fb6704390d7a76a2f2b2d3bc190
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2802
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-03 18:54:39 +00:00
Luke Granger-Brown
268cb4cb11 chore(3p/gerrit_plugins): attempt to stabilise hashes a bit
I'm dropping the leaveDotGit and deepClone bits; they were set like that
purely to try to make the build stamping work. In practice, not only
does the build stamping not work, but it also means we hit some
inconveniently-different hashes from time to time when gitiles does...
something??? on its backend.

I'm also putting some gcroots for these on whitby, which should also
help a bit, although it's a bit of a hack.

Change-Id: Ie6082248393e62795c18b1971fc2d16f4e8cc81d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2781
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-03 18:39:17 +00:00
Vincent Ambo
5111d9d493 feat(www/tazj.in): Add a temporary route for serving static blobs
Until I come up with a better idea.

Change-Id: Ie44cae4c2df264cbe1a70f5ebcca814262dd2800
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2771
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2021-04-03 11:44:51 +00:00
Luke Granger-Brown
23d8e89f03 chore(clbot): reformat messages
Instead of putting the subject in quotes, we instead reorder the message
to be of the format:

CL/2768 applied by lukegb - chore(clbot): reformat messages - https://cl.tvl.fyi/2768

Change-Id: I77d19525c399396a91797f423bdfc92069d47f9f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2768
Reviewed-by: glittershark <grfn@gws.fyi>
Tested-by: BuildkiteCI
2021-04-02 20:05:02 +00:00
Luke Granger-Brown
0456de3733 chore(ops/nixos): finish removal of depot.nix
All user configs and modules have been migrated to using the depot
module parameter. All hail the hypnotoad.

Change-Id: Ic05c61fccba3ac505a339283b6ef3105a2d0711c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2765
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-02 18:00:14 +00:00
Luke Granger-Brown
649145f4e1 refactor(glittershark/machines): switch to depot module arg
Previously the tvl depot attrset was provided as the config.depot
argument, but to make NixOS modules look more like the rest of the depot
this is being switched to being provided as the "depot" argument
instead.

Change-Id: I7e011fe5c44ac3e4142177afd168f1bbc602d56f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2764
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
2021-04-02 18:00:14 +00:00
Luke Granger-Brown
b35e358eb5 refactor(ops/nixos): migrate to depot module arg
Previously the depot argument was provided as config.depot, but the "new
way" of doing things (which is more like the args list provided in the
rest of the depot) is to provide this as the "depot" NixOS module
argument instead.

Change-Id: Ib48b1c7c1bdff9c1eb0618c6cbacc22b651f5f98
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2763
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: glittershark <grfn@gws.fyi>
2021-04-02 18:00:14 +00:00
Luke Granger-Brown
999f98436c refactor(camden): remove explicit depot.nix import
The depot.nix module is automatically brought in by systemFor, and
shouldn't be included in user configs, since it's going away.

Change-Id: Ib5b60203978b51dbff1f7bcc287f2ac9eb278823
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2762
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-02 18:00:14 +00:00
Luke Granger-Brown
b71362f198 refactor(users/glittershark/system): switch to ops.nixos.nixosFor
ops.nixos.nixosFor is intended to provide the "basic" readTree-like
system arguments to NixOS systems; in particular, it provides "depot" as
a module argument, as well as, for the moment, config.depot.

Change-Id: I442c7d79ac0eb2ff8e1bf606f4e083e15eb0a8f4
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2761
Tested-by: BuildkiteCI
Reviewed-by: glittershark <grfn@gws.fyi>
2021-04-02 18:00:14 +00:00
Luke Granger-Brown
4bfcd09682 refactor(ops/nixos): add "depot" argument to NixOS modules
For the moment I've opted to not import all of the other things we'd
usually provide to things imports via readTree, because I think it's a
bit dangerous to accidentally overwrite things like NixOS' notion of
"lib" with our own version.

So for the moment, baseModule provides only "depot".

Change-Id: I3db9132a3d9227055d4c1b00f02effcb84edcc53
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2760
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-02 18:00:14 +00:00
Vincent Ambo
dc9a1754d5 fix(tazjin/homepage): Use most recent entry update time for feed
This drops the annoying usage of builtins.currenTime, which means that
my website stops constantly rebuilding.

Change-Id: I44294b06588673846f473beb6533a5fa3410a1bd
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2767
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2021-04-02 13:44:10 +00:00
Vincent Ambo
4450003bd7 feat(tazjin/blog): Add distinction between published & updated times
Fixes a long-standing todo by adding an additional field for the time
at which a post was updated, and handling this in both site
generation (to note the update date after the publish date) and in
Atom feed generation (by populating both the updated and published
fields).

Change-Id: If80db43459b2a0c77eea4dde7255651b5d6cd64b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2766
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2021-04-02 13:44:10 +00:00
Vincent Ambo
817cd6f166 feat(ops/nixos/www): Enable tvl.su aliases for dev tools
This is not for the domain root though, as that's going to be
something else eventually.

The canonical URLs are the .fyi ones (at least for now), and some of
these tools will eventually generate links that make user sessions
started from *.tvl.su converge on *.tvl.fyi.

Relates to b/98

Change-Id: I1c3bcf72a3063059002e4b0bdd57c269a410a8bc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2758
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
2021-04-02 11:10:51 +00:00
sterni
db80c2d368 feat(3p/cgit): limit width of div#summary, i. e. /about/**
Decreased text width for the /about pages should increase readability
considerably as jumping back to the beginning is hard for longer
lines. The result is still not perfect as the font size for the /about
pages is rather small and many lines thus get broken somewhat awkwardly.

We could probably migitate that using a larger font size.

The implementation choice of adding a tvl-extra.css which we inject into
cgit.css in preBuild is for simplicity: We don't need to worry about
routing an extra CSS file and loading it from the right location via
extra cgit head entries and serving it at the correct location using
either nginx or thttpd.

A drawback of this is however that iteration is slowed down by cgit's
compilation time.

Additionally, this should be the basis for implementing a bubblegum
themed cgit for Profpatsch.

Change-Id: I18060f735167acd623cef7a17c83408978461249
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2756
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-02 10:24:41 +00:00
sterni
8cc1dcf588 feat(ops/users): add milan to users
Change-Id: I77e5e9a0ae1bf2ee59ac4967c5481b9044f97934
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2757
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-02 10:21:37 +00:00
sterni
27b300fe34 feat(ops/whitby): add sterni to trusted users
I am somewhat trustworthy… maybe? Also I tend to gc depot stuff so ssh
serve would be neat.

Change-Id: I4672f20a32a756692dd156b5e40e5a7f37ba5ad0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2660
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: glittershark <grfn@gws.fyi>
2021-04-02 10:21:32 +00:00
sterni
1f40a52280 feat(3p/cgit): enableParallelBuilding
This gives a decent compilation speedup even on slow machines, so seems
worth it. Let's hope the cgit build process is not racy.

Change-Id: Ic4ae72789da2ccae16fd48e46aec624244b25035
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2755
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-02 09:17:05 +00:00
sterni
108e19c906 feat(sterni/dot-time-man-pages): mdoc port of dotti.me
More or less direct port of https://dotti.me to mdoc(7) with the
following changes:

* Add a RFC3339 column to the EXAMPLES table. RFC3339 is a well
  specified subset of ISO8601 whose specification is also more
  accessible so this could help someone out.

* Add a SEE ALSO section linking to the web site

* Add an AUTHORS section

Change-Id: I8db00bd402697aa52f6f651f28692617b487f832
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2642
Tested-by: BuildkiteCI
Reviewed-by: edef <edef@edef.eu>
2021-04-02 09:14:28 +00:00
sterni
b6818d3190 chore(web/bubblegum): add OWNERS file
Forgot to add this when moving it out of my //users directory.

Change-Id: If6d30a2a58a6bd73e160706cb706e3b2e100e909
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2754
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2021-04-01 22:05:31 +00:00
sterni
93a746aaaa feat(web/bubblegum): nix CGI programming framework
So here is what has been keeping me up at night: At some point I
realized that nix actually made a somewhat passable language for CGI
programming:

* That `builtins.getEnv` exists as one of the impurities of Nix is
  perfect as environment variables are the main way of communication
  from the web server to the CGI application.

* We can actually read from the filesystem via builtins.readDir and
  builtins.readFile with bearable overhead if we avoid importing the
  used paths into the nix store.

* Templating and routing are convenient to implement via indented strings
  and attribute sets respectively.

Of course there are obvious limitation:

* The overhead of derivations is probably much to great for them to be
  useful via IfD.

* Even without derivations, nix evaluation is very slow to the point
  were a trivial application takes between 100ms and 400ms to produce a
  response.

* We can't really cause effects other than producing a response which
  makes it not viable for a lot of applications. There are some ways
  around this:

  * With a custom interpreter we could have streaming and multiplexed
    I/O (using lazy lists emulated via attrsets) to cause such effects,
    but it would probably perform terribly.

  * We can use builtins.fetchurl to call other HTTP-based microservices,
    but only in very limited constraints, i. e. only GET, no headers,
    and only if the tarball ttl is set to 0 in the global nix.conf.

* Terrible error handling capabilities because builtins.tryEval actually
  doesn't catch a lot of errors.

To prove that it actually works, there are some demo applications,
which I invite you to run and potentially break horribly:

    nix-build -A web.bubblegum.examples && ./result
    # navigate to http://localhost:9000

The setup uses thttpd and executes the nix CGI scripts using
users.sterni.nint which automatically passed `depot`, so they can
import the cgi library.

Change-Id: I3a22a749612211627e5f8301c31ec2e7a872812c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2746
Tested-by: BuildkiteCI
Reviewed-by: tazjin <mail@tazj.in>
2021-04-01 18:50:36 +00:00
sterni
68f3ac64c4 feat(sterni/nint): shebang interpreter for nix scripts
nint (short for nix interpreter) is a tiny wrapper around nix-instantiate
which allows to run nix scripts, i. e. nix expressions that conform to
a certain calling convention. A nix script runnable using nint must
conform to the following constraints:

* It must evaluate to a function which has a set pattern with an
  ellipsis as the single argument.

* It must produce a string as a return value or fail.

When invoked, a the expression receives the following arguments:

* `currentDir`: the current working directory as a nix path

* `argv`: a list of strings containing `argv` including `argv[0]`

* extra arguments which are manually specified which allows for
  passing along dependencies or libraries, for example:

    nint --arg depot '(import /depot {})' my-prog.nix [ argv[1] … ]

  would pass along depot to be used in `my-prog.nix`.

Such nix scripts are purely functional in a sense: The way inputs can be
taken is very limited and causing effects is also only possible in a
very limited sense (using builtins.fetchurl if TARBALL_TTL is 0,
adding files and directories to the nix store, realising derivations).
As an approximation, a program executed using nint can be thought of
as a function with the following signature:

  λ :: environment → working directory → argv → stdout

where environment includes:

* the time at the start of the program (`builtins.currentTime`)
* other information about the machine (`builtins.currentSystem` …)
* environment variables (`builtins.getEnv`)
* the file system (`builtins.readDir`, `builtins.readFile`, …) which
  is the biggest input impurity as it may change during evaluation

Additionally import from derivation and builtin fetchers are available
which introduce further impurities to be utilized.

Future work:

* Streaming I/O via lazy lists. This would allow usage of
  stdin and output before the program terminates. However this would
  require using libexpr directly or writing a custom nix interpreter.

  A description of how this would work can be found on the website of the
  esoteric programming language Lazy K: https://tromp.github.io/cl/lazy-k.html

* An effect system beyond stdin / stdout.

* Better error handling, support setting exit codes etc.

These features would require either using an alternative or custom
interpreter for nix (tvix or hnix) or to link against libexpr directly
to have more control over evaluation.

Change-Id: I61528516eb418740df355852f23425acc4d0656a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2745
Reviewed-by: sterni <sternenseemann@systemli.org>
Tested-by: BuildkiteCI
2021-04-01 18:50:36 +00:00
Vincent Ambo
7907319a11 refactor(tazjin/nixos): Use setup scripts from //ops/nixos
Change-Id: I8baf2404f0f6e9c4fad767911646cdc55051dd2e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2753
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2021-04-01 18:00:52 +00:00
Vincent Ambo
d2376e24d1 fix(tazjin/blog): Make redirects from old links permanent
Change-Id: I41d71f9aae7e64bdfef8f2b7142d13009b216eaa
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2752
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2021-04-01 18:00:52 +00:00
Florian Klink
ab7e752b4a chore(third_party/cgit): use lib instead of stdenv.lib
Getting `lib` from `stdenv.lib` is deprecated, and throws warnings.

Change-Id: Ic925818c1b5a67d15d6d40ad784554328cd603e0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2751
Reviewed-by: lukegb <lukegb@tvl.fyi>
Reviewed-by: glittershark <grfn@gws.fyi>
Reviewed-by: tazjin <mail@tazj.in>
Tested-by: BuildkiteCI
2021-04-01 17:30:20 +00:00
Vincent Ambo
387b8c83bf style(web/todolist): List paths without 'At ' prefix
This also looks much cleaner than before.

Change-Id: I767b881c73699151afc03746c04e413e74f30387
Reviewed-on: https://cl.tvl.fyi/c/depot/+/2750
Tested-by: BuildkiteCI
Reviewed-by: flokli <flokli@flokli.de>
2021-04-01 16:53:14 +00:00