573

See https://discourse.nixos.org/t/anatomy-of-a-nixos-config/40252/7

573

https://stackoverflow.com/a/77737026

573

 nix eval --raw .#nixOnDroidConfiguration
s.sams9.config.home-manager.config.custom.programs
.emacs-nano.finalPackage --impure

if error-free also approach building

 nix build .#nixOnDroidConfiguration
s.sams9.config.home-manager.config.custom.programs

573

See https://discourse.nixos.org/t/how-to-efficiently-iterate-while-developing-a-flake-input/39784/4

One more possibility would be cp *binary-name* $out/renamed-name in install phase for each wanted derication as stated here. https://discourse.nixos.org/t/how-can-i-distinguish-between-two-packages-who-has-the-same-name-for-the-executable/39770/3

This is also important NixOS/nix#2283 (comment)

573

 -bash-5.2$ nix shell --impure --expr 'with import (builtins.getFlake "
ata/data/com.termux.nix/files/hom.nix-config").inputs.unstable {};
julia' -c julia --help

    julia [switches] -- [programfile] [args...]

Switches (a '*' marks the default value, if applicable; settings marke
d '($)' may trigger package precompilation):

-v, --version              Display version information

573

• choose flake when starting n-o-d for the 1st time after installing app
• according to nix-community/nix-on-droid#65 (comment):

cd ~/.config/nix-on-droid
vi flake.nix # change nixpkgs to point to master and n-o-d to point to master too
vi nix-on-droid.nix # add git to packages and add line `nix.package = pkgs.nixVersions.unstable`
nix flake update
nix-on-droid build -F .
nix-on-droid switch -F . # nix should be newest version after that

573

Track when PRs are merged to certain branch, i. e. package nix here: https://nixpk.gs/pr-tracker.html?pr=285264

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• See https://nix.dev/manual/nix/2.19/command-ref/new-cli/nix3-profile-install#examples and
• https://www.reddit.com/r/NixOS/comments/15ke4tk/comment/jv4w235/ and i. e.
• https://lazamar.co.uk/nix-versions/?channel=nixpkgs-unstable&package=hledger-iadd

Given at lazamar is:

nix-env -iA haskellPackages.hledger-iadd_1_3_16 -f https://github.com/NixOS/nixpkgs/archive/d1c3fea7ecbed758168787fe4e4a3157e52bc808.tar.gz

which translates to (I have flake-registry set, see example):

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I. e. when last successful running gha was (https://github.com/573/nix-config-1/actions/runs/7762460516, commit is https://github.com/573/nix-config-1/commit/0bd694c0a76fdc0561fd637700619dccd6b6570e) and I wanna know the difference to my current failing one.

So I first fetch this exact commit 0bd694c0a76fdc0561fd637700619dccd6b6570e to a debug branch while then I can inspect the differences to my local branch's (wsl2) head:

git fetch https://github.com/573/nix-config-1.git 0bd694c0a76fdc0561fd637700619dccd6b6570e:refs/heads/debug --depth 1
git diff 0bd694c0a76fdc0561fd637700619dccd6b6570e..wsl2
git diff 0bd694c0a76fdc0561fd637700619dccd6b6570e..wsl2 -- . ":(exclude)flake.lock"
# change something accordingly
nix eval --show-trace --raw  .#nixosConfigurations.DANIELKNB1.config.system.build.toplevel

573

See NixOS/nix#9547 and https://discourse.nixos.org/t/nix-2-20-released/39027/9