> You cannot get educated by this self-propagating system in which people study
> to pass exams, and teach others to pass exams, but nobody knows anything. You
> learn something by doing it yourself, by asking questions, by thinking, and by
> experimenting.
> - Richard Feynman
In the spirit of learning by doing, I decided to implement a simple blockchain
server. More work remains, but I'm tired after working on this for ~2-3h. I'd
like to reimplement this from memory using a statically typed language like
Haskell. I'd also like to implement node
discovery (https://en.bitcoin.it/wiki/Satoshi_Client_Node_Discovery) because
that is still something I don't quite understand. But I'm signing-off for
now...
Change-Id: I74f424e7f52ffbf81eaad420d7d5205da66d33b5
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4802
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
While these aren't technically source code buffers, but the purpose of
`buffer-ivy-source-code` is to create a list of buffers I likely want to switch
to, which includes these.
Change-Id: If3f7b6afa6282a3fb8d0d4a3f7aa4ee64287df65
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4799
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
gLinux doesn't use `lightdm.service` (you can confirm this by seeing if
`lightdm` is listed in the units reported by calling `systemctl`). I found
`gdm` (i.e. Gnome Display Manager), and it appears that calling...
```shell
systemctl restart gdm.service
```
...does the trick.
Change-Id: Iff47d20db57ce11138f9af943fe64cc18068f5bb
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4798
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
No need to `mkDerivation` when I'm already using `writeShellScriptBin`. Also:
prefer `<CR>` instead of `<Enter>` for consistency reasons.
Change-Id: Ida8ecec0bd4e3e8c0fbb1ea34eefd61a0fefb4bc
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4797
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
This makes it easier to `scp` to the new host.
Change-Id: If746a71204c97255547b579252622005b4d13b20
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4793
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
I think this is a form of symmetric encryption where the passphrase (e.g. "ICE")
is repeated (e.g. "ICEICEICEICEI...") until it matches the length of the
cleartext string; after that, the two byte-strings are XOR'd against one another
and then encoded as hexadecimal creating the ciphertext.
Change-Id: Ib148f06d6c42a41377d1df1f0738d77da935a9f6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4789
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Create a frequency table of alphabetic characters by reading each character in
"Alice in Wonderland"; use this frequency table to score cleartext when decoding
ciphers.
Change-Id: Id322af64d792c15231a1a02794f396c46196c207
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4788
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
I filed an issue with evil in case there's a potential bug-fix or feature:
https://github.com/emacs-evil/evil/issues/1537
Change-Id: Ia9293b59696ac693f9bffb4d3505ea8fa2d59784
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4810
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Deploy dummy Shopify site as both a learning exercise and proof-of-concept for
Raf's card game, Monster Poker.
Change-Id: I7bc91dcbf4e171c5e169140f5e9d811303e1285f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4787
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Preferring billandhiscomputer.com in lieu of wpcarro.dev. wpcarro is a bit of a
tough username for others to remember and for me to say out-loud (it usually
involves me spelling it and explaining to others why Carroll is missing
2x-Ls). I think it's time for a change.
During the transition, I don't want to deal with stale links to
https://wpcarro.dev, so I'm templatizing more of my website and blog so that
these values can be replaced.
Expect more forthcoming changes.
Change-Id: Ic2f5519e6b0d76fcb8b737bf50009e8388f1b178
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4754
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
This support reverse-DNS lookups.
I encountered a problem where I accidentally deleted my instance's
`nat_ip` (external, ephemeral IP). I needed to run...
```shell
terraform apply -replace=google_compute_instance.diogenes
```
...which invalidates terraform's local cache of the state. I believe this used
to be called `terraform taint`. Things are mostly WAI, with one known issue:
quasselcore and billandhiscomputer.com complain about missing SSL certs, but I
believe this is a race-condition. Calling...
```shell
systemctl restart quassel.service
```
...resolves the issue for quassel. Unfortunately the same doesn't work for
nginx.service, but after a bit of time https://billandhiscomputer.com "just
works". Clearly I'm not sure what's going on here. At least not yet...
Change-Id: I9f059655cb6e83d56618b77cfe4ed38283614ef6
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4753
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Add quassel to the nginx group because only user=acme and group=nginx can read
/var/lib/acme/*
Change-Id: If456b8ebf43ee098cd8007c3c6235c78c1071250
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4752
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
source_tags means:
> the firewall will apply only to traffic with source IP that belongs to a tag
> listed in source tags.
This mechanism exists (presumably) for local networking between instances that I
manage. For ingress traffic, I'd like to open these ports to the wider
internet.
Change-Id: If0963c853f10f3c205581cce100671714a5f6a3a
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4750
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
These are now available at https://billandhiscomputer.com. I still need to
update the website copy and transfer wpcarro.dev over from Google Domains. I
think I prefer billandhiscomputer (username bill, bill_and_his_computer,
bill-and-his-computer, the_real_bill), so I may deprecate wpcarro. We'll see...
Change-Id: Ia7831ee4813e2cf639047d22d59d302a50e06e66
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4748
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
TL;DR:
- Define googleCloudVM function to provision NixOS VMs on Google Cloud.
- Consume googleCloudVM in diogenes/default.nix
- Define README.md for basic usage instructions (subject to change).
- Delete diogenes's HCL
- Remove `diogenesSystem` from meta.targets
I'm still having trouble with DNS:
- I need to transfer the Google Domains config to Cloud DNS
- `host billandhiscomputer.com` is NXDOMAIN, so I don't trust my tf DNS config
- This is preventing me from getting SSL certs, which blocks my website, quassel
Change-Id: If315876c96298e83a5953f13b62784d2f65a1024
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4747
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
I wasn't sure if removing the email portion would be a schema error, but NixOS's
GCE image relies on the tripartite structure, and maybe other things do too.
Change-Id: I1b045fad974a7227d1980fff19c9d4f48ba58356
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4746
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
On non-NixOS configs, `git` has been complaining about missing `--global`
variables for `user` and `email`.
TODO(wpcarro): Support this in google-briefcase instead.
Change-Id: Iae29fe9aaa6c13295063137f241eeb5861d4b244
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4792
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
I rewrote my `README.md` most recently to show some managers what type
of side-projects I was working on. After successfully transfering to SRE
internally, I don't need the `README.md` to be a marketing document but
rather a tutorial for my future self. This change is a step in that
direction.
Change-Id: Ieaf0e72c8a33a163e6b6adefd76665ca675e8462
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4791
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
After receiving another computer from Google and attempting to "easily"
install my configuration, I realized that I had some holes. In reality
these could (and perhaps should) be easily tested using CI that attempts
to cleanly install my configuration on various platfoms (e.g. Debian,
NixOS), but I'm not interested in supporting something like that (at
least not at the moment).
For now, it suffices to nixify some of the lingering shell scripts with
implicit dependencies on tools like `stow`.
> Don't let perfect be the enemy of good?
Change-Id: Ifdeac2c855e46973e3a4ea416418109a748eb41d
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4790
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
I'm mimmicking the setup of diogenes-1 until I switch everything over to the
terraform-defined diogenes.
Change-Id: Ic9b54909696616b5f206bbf982ff556f053c424e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4738
Tested-by: BuildkiteCI
Reviewed-by: zseri <zseri.devel@ytrizja.de>
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Supporting SSH turned-out to be a bit of a saga... Thank you @espes and @grfn
for the pointers.
Problem: When I originally setup my Google VM, I followed this tutorial,
https://nixos.wiki/wiki/Install_NixOS_on_GCE, so I ended-up installing
`nixos-20-03`: an older version of NixOS, (the newest version in `gsutils ls -l
gs://nixos-images`). Critically, I missed this important footnote:
> NOTE: Newer images (from 20.09 on) won't be available at the bucket above, and
> will instead need to be found at
> <nixpkgs/nixos/modules/virtualisation/gce-images.nix>.
It turns out that *newer* images include this script...
https://github.com/NixOS/nixpkgs/blob/master/nixos/modules/virtualisation/fetch-instance-ssh-keys.bash
...which reads the key, "sshKeys", from the Google metadata server and copies
the value into /root/.ssh/authorized_keys.
To make matters a bit misleading, the NixOS script expects the key to be
"sshKeys", but Google deprecated that in favor of "ssh-keys" (hence why both
versions appear in this commit).
TL;DR:
- upgrading to a newer NixOS image
- adding an empty access_config block so Google will assign my VM an external IP
- removing oslogin (not necessary to do, and I may add it back later)
- adding my public SSH key as metadata
Change-Id: If624fe77afd47b31fa7be0a1dd4a55512317eef0
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4737
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
For now:
- git confg
- picom: X compositor
- dunst: system notifications (not working for quassel)
I still need to port various configs and ensure I support both gLinux and NixOS
machines.
Change-Id: I31a635eaacac25ef6219e079fc968d2ece026a5f
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4736
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Tested-by: BuildkiteCI
This is going to be enforced in CI very shortly (it already kind of
was, but not really).
Change-Id: I8569d030e31230f077371bd1644b75f048271a0e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4728
Tested-by: BuildkiteCI
Autosubmit: tazjin <mail@tazj.in>
Reviewed-by: tazjin <mail@tazj.in>
Reviewed-by: wpcarro <wpcarro@gmail.com>
When I include "80" and "443" in the allowed TCP ports, the ports don't appear
to be open, but when I add the tags "http-server" and "https-server", which I
don't control, they do. I'm not sure what's going on, but I don't want to let
perfect be the enemy of good...
Change-Id: I46097a9d80708d14261b0af34c16ab1129aa8107
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4725
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Tested-by: BuildkiteCI
TL;DR:
- Create an index page to list blog posts
- Drop blog.wpcarro.dev -> wpcarro.dev/blog
- Create fragments directory to host reusable static website components
- Consume fragments in wpcarro.dev and wpcarro.dev/blog for brand consistency
Change-Id: Ib8440300c008c3c0c5e5a6f207e4ea207dd41b47
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4717
Tested-by: BuildkiteCI
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Hugo is a bit too heavyweight for my taste.
Change-Id: I331bc5898bd40f1a03bbde8ad69fe3cc9f72c18b
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4704
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Tested-by: BuildkiteCI
Let's see what mosh is all about...
Change-Id: I0439130f55dc056370397c3e4ea8039f888703c3
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4690
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Tested-by: BuildkiteCI
The content needs small gutters to improve readability on my iPhone 12.
Change-Id: I751ae5387ad93c95729e642c21c37e481412c00e
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4678
Reviewed-by: wpcarro <wpcarro@gmail.com>
Autosubmit: wpcarro <wpcarro@gmail.com>
Tested-by: BuildkiteCI
