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Problem: Calling bild.run inside NixOS configs triggered IFD during
OS evaluation. ANSI escape codes from bild broke JSON parsing in Nix
sandbox, causing build failures.
Root cause: bild.run uses IFD (Import From Derivation) which runs
bild --plan during Nix evaluation. When this happened inside NixOS
service definitions, it ran recursively and bild output ANSI codes
that corrupted the JSON analysis output.
Solution: Two-phase architecture + NO_COLOR support
1. Biz/Packages.nix: Pre-builds all packages outside NixOS context
2. Biz.nix: Accepts packages as function argument (default:
Packages.nix) 3. Omni/Bild.nix: Sets NO_COLOR=1 in analysis
derivation 4. Omni/Log/Terminal.hs: Respects NO_COLOR env var
5. Omni/Log/Terminal.hs: Skip getTerminalSize when NO_COLOR set
to avoid
escape code output
6. Omni/Log/Concurrent.hs: Skip line initialization without ANSI
support
Now NixOS builds succeed: - Package IFD happens once at top level -
No recursive builds during service evaluation - Clean JSON output
from bild --plan in Nix sandbox - NixOS configs reference pre-analyzed
packages
Changes: - Add Biz/Packages.nix - standalone package builder - Update
Biz.nix to accept packages argument - Update Biz/Dragons/Analysis.nix
to use Packages.nix - Remove Biz/Targets.nix (replaced by
Packages.nix) - Add NO_COLOR support throughout logging stack -
Fix ANSI.getTerminalSize outputting escape codes when NO_COLOR set
Amp-Thread-ID:
https://ampcode.com/threads/T-bc0f6fc7-46bf-4aa2-892e-dd62e7251d4b
Co-authored-by: Amp <amp@ampcode.com>
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Problem: Calling bild.run inside NixOS configs triggers recursive
builds during OS image creation, causing slow IFD evaluations that
worsen as complexity grows.
Solution: Create Biz/Targets.nix that pre-declares all buildable
targets as an attribute set. NixOS configs now import and reference
these targets directly, eliminating recursive builds during evaluation.
Changes: - Add Biz/Targets.nix exposing storybook, podcastitlater-web,
podcastitlater-worker, dragons-analysis
- Update Biz.nix to import targets and reference them - Update
Biz/Dragons/Analysis.nix to use targets pattern
Benefits: - All bild.run calls happen once at top level during targets
evaluation - NixOS service configs reference pre-built derivations -
Scalable: adding targets doesn't slow individual builds - Explicit:
clear what gets built for each OS
Amp-Thread-ID:
https://ampcode.com/threads/T-bc0f6fc7-46bf-4aa2-892e-dd62e7251d4b
Co-authored-by: Amp <amp@ampcode.com>
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This implements a working prototype of PodcastItLater. It basically just works
for a single user currently, but the articles are nice to listen to and this is
something that we can start to build with.
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This replaces the manually-curated nixTargets list in Bild.hs. Now any nix file
that has the executable bit set will be built.
I added run.sh shebangs to each of the buildable nix targets as well. When
executing these, they will succeed at building, but they have no 'out' metadata,
and so when run.sh tries to exec them, it will fail. This is fine for now.
How would one go about execing a linux tree anyway? If all of the nix targets
output something standard like a qemu image or a container, then I could have a
standard wrapper that calls the image and starts the system. That might be the
ideal way to have a runnable nix target. But this would require rethinking my
infrastructure and how to deploy things, so I can't quite do that yet.
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I mostly wanted a formatter that would format `inherit` blocks
vertically, because otherwise they are super hard to read when diffing
or even just editing. Both alejandra and the new nixos/nixfmt format
verically like this, but alejandra has slightly better format (I guess)
and for some reason nixfmt did not respect my `GLOBIGNORE` setting when
doing `nixfmt **/*.nix` so it was trying to format stuff in `_/nix`, and
failed. So anyway I went with alejandra.
- https://github.com/kamadorueda/alejandra
- https://discourse.nixos.org/t/enforcing-nix-formatting-in-nixpkgs/49506
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I put the storybook into a new Biz.nix deploy target. The idea here is that any
Biz/* targets should be hosted by this one VM for simplicity. Over time I can
grow this as need be, but this should work to host a few services.
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