In reply to @cdepillabout:matrix.org

How can I use a quoted let binding?

For instance, how would I use assert after the in:

let "assert" = 3; in ...

In reply to @polykernel:kde.org
I may be wrong but I don't think there is any way to override top-level keywords.

Just for clarification, I'm not trying to override assert in my example, I'm just trying to use a binding that happens to be called assert.

I'd be happy for an example of how to use any sort of quoted binding. For instance:

let "this is an identifier with spaces" = 3; in ...

In reply to @polykernel:kde.org
I may be wrong but I don't think there is any way to override top-level keywords.

Just for clarification, I'm not trying to override the assert keyword in my example, I'm just trying to use a binding that happens to be called assert.

I'd be happy for an example of how to use any sort of quoted binding. For instance:

let "this is an identifier with spaces" = 3; in ...

Behold variable function parameter count trick in nix:

> concatMany = s: { inherit s; __toString = self: self.s; __functor = self: s': self // { s = self.s + s'; }; }
> "${concatMany "foo" " " "bar"}"
"foo bar"
> "${concatMany "yes" ", " "you " "saw" " it" "!"}"
"yes, you saw it!"

Simple printf implementation with only %s and %%:

{ lib, ... }:

formatString:

let
  tokenWithArg = token: builtins.elem token [
    "%s"
  ];

  tokens = lib.flatten (builtins.split "(%.)" formatString);
  argsNeeded = builtins.length (builtins.filter tokenWithArg tokens);

  format = args: (builtins.foldl' ({ out ? "", argIndex ? 0 }: token: {
    argIndex = argIndex + (if tokenWithArg token then 1 else 0);
    out =
      /**/ if token == "%s" then out + builtins.elemAt args argIndex
      else if token == "%%" then out + "%"
      else out + token;
  }) {} tokens).out;

  accumulateArgs = argCount: args:
    if argCount > 0
    then arg: accumulateArgs (argCount - 1) (args ++ [ arg ])
    else format args;
in

accumulateArgs argsNeeded []

Can anyone help me
I'm on nix-os trying debug & create sample configuration similar to this one
https://github.com/efim/nix-searx-container-example/blob/master/non-flake-config.nix

but for "searxng", so that searx plugins would be installed just as easily

on previous week this builting.fetchGit worked and worked great
(lib.fetchFromGitHub - infinitely recursed, it seems because i've been importing overlays to pkgs from flakes, and to get flakes final lib has to be built, etc)

but today then I try to do
sudo nixos-container update bar --config-file non-flake-config.nix
I get prompted for "email+password" authentication on github
And even if I provide correct auth - I get error
remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.
Over weekend I've been refactoring NixOS config, but have no idea what could have caused it

When I try to evaluate statement with lib.fetchGit in nix-repl it works well!
and git fetch --all asks for my ssh key, not email =C
( maybe @gytis would know?)

Can anyone help me
I'm on nix-os trying debug & create sample configuration similar to this one
https://github.com/efim/nix-searx-container-example/blob/master/non-flake-config.nix

but for "searxng", so that searx plugins would be installed just as easily

on previous week this builting.fetchGit worked and worked great
(lib.fetchFromGitHub - infinitely recursed, it seems because i've been importing overlays to pkgs from flakes, and to get flakes final lib has to be built, etc)

but today then I try to do
sudo nixos-container update bar --config-file non-flake-config.nix
I get prompted for "email+password" authentication on github
And even if I provide correct auth - I get error
remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.
Over weekend I've been refactoring NixOS config, but have no idea what could have caused it

When I try to evaluate statement with lib.fetchGit in nix-repl it works well!
and git fetch --all asks for my ssh key, not email =C
( maybe @gytis would know?)

Can anyone help me
I'm on nix-os trying debug & create sample configuration similar to this one
https://github.com/efim/nix-searx-container-example/blob/master/non-flake-config.nix

but for "searxng", so that searx plugins would be installed just as easily

on previous week this builting.fetchGit worked and worked great
(lib.fetchFromGitHub - infinitely recursed, it seems because i've been importing overlays to pkgs from flakes, and to get flakes final lib has to be built, etc)

but today then I try to do
sudo nixos-container update bar --config-file non-flake-config.nix
I get prompted for "email+password" authentication on github
And even if I provide correct auth - I get error
remote: Support for password authentication was removed on August 13, 2021. Please use a personal access token instead.
Over weekend I've been refactoring NixOS config, but have no idea what could have caused it

When I try to evaluate statement with lib.fetchGit in nix-repl it works well!
and git fetch --all asks for my ssh key, not email =C