my nix configs
Forgejo's Mermaid parser is stricter than GitHub's and rejected two
diagrams in workflow-design.md:
1. Flowchart 3.1 — `@check`, `@test`, `@make` in pipe-delimited edge
labels were tokenised as LINK_ID (newer Mermaid uses `@{...}` for
edge IDs), e.g. `P7E -->|@check → @test → @make| P7` failed at
the first @.
2. State diagram 3.2 — the second colon inside transition labels
(`escalate: test_design`) collided with the `:` field separator
that splits transition from label.
Drops the @-prefix from labels in all three diagrams (`@check` → `check`
in prose-of-the-label only; ADRs and prose elsewhere keep `@check`
backticked, which is just markdown). Replaces second colons with
descriptive text. Drops parentheses from state-diagram transition
labels. Drops the Unicode arrow `→` in favour of plain words.
Quotes the flowchart node-label strings to keep `<br/>` safe.
The ADR text and prose continue to use `@<name>` references — those
live in markdown, not Mermaid, and render the same.
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| .secrets | ||
| config | ||
| homes | ||
| lib | ||
| modules | ||
| overlays | ||
| packages | ||
| systems | ||
| .gitattributes | ||
| .gitignore | ||
| .sops.yaml | ||
| CLAUDE.md | ||
| flake.lock | ||
| flake.nix | ||
| README.md | ||
NixOS Configuration
A modular NixOS configuration setup for multiple systems.
Project Structure
modules/: Reusable NixOS/Darwin modulescommon.nix: Common module imports and definitionsnixos/: NixOS-specific moduleshome/: Home Manager integration for NixOSnix/: Nix package manager configurationnix-ld/: Dynamic linking supportnetwork/: Network configuration modulesresolved/: DNS resolution configuration
security/: Security-related modulesssh-host-keys/: SSH host key management
services/: Service configuration modulesbase/: Basic system configurationgui/: Graphical interface setuphomeprinter/: Home printer supportpodman/: Container runtimesecureboot/: Secure boot configuration
sgx/: Intel SGX supportaesmd_dcap/: SGX AESMD DCAP servicepccs/: SGX Provisioning Certificate Caching Service
system/: System configuration modulesauto-upgrade/: Automatic system upgradeslimits/: System resource limitszram/: ZRAM swap configuration
tools/: Common tools configurationdirenv/: Direnv integrationgit/: Git configuration
user/: User account configurationvirtualization/: Virtualization support
home/: Home Manager modulescli-apps/: Command-line applicationsgui/: GUI application configurationtools/: User tools configurationuser/: User preferences
darwin/: Darwin-specific moduleshome/,nix/,security/, etc.
systems/: Individual system configurationsx86_64-linux/: Linux systems on x86_64aarch64-linux/: Linux systems on ARMx86_64-darwin/: macOS systems on x86_64aarch64-darwin/: macOS systems on ARM
homes/: Home Manager configurations for each user/systemlib/: Helper functions and utilitiesoverlays/: Nixpkgs overlayspackages/: Custom packages
Using the Configurations
Install a system via nixos-anywhere
$ nix run github:numtide/nixos-anywhere -- \
--flake 'git+https://git.hoyer.xyz/harald/nixcfg'.#hostname \
root@hostname --no-reboot --tty -i $HOME/.ssh/id_ed25519
... enter disk password
$ ssh -t root@hostname systemd-cryptenroll /dev/luksdev --wipe-slot=tpm2 --tpm2-device=auto --tpm2-pcrs=1,15
Update NixOS system
$ nixos-rebuild --use-remote-sudo -L --show-trace --refresh --flake git+https://git.hoyer.xyz/harald/nixcfg boot
Update macOS system
$ darwin-rebuild -L --show-trace --refresh --flake git+https://git.hoyer.xyz/harald/nixcfg switch
Update home-manager configuration
$ nix --refresh run 'git+https://git.hoyer.xyz/harald/nixcfg' -- \
switch -b backup --flake 'git+https://git.hoyer.xyz/harald/nixcfg'