[Bug] By default, nix-shell -p $package fails, with a (difficult-to-comprehend) trace, when flakes are enabled. #499
Description
I am attempting to reproduce PowerShell/PowerShell/issues/16746#issuecomment-1076995838. However, nix-shell -p powershell fails. discussions/498 depicts a workaround. However, it's not ideal.
An Example
Welcome to Nix-on-Droid! If nothing works, open an issue at https://github.com/nix-community/nix-on-droid/issues or try the rescue shell. Setting default user profile... Sourcing Nix environment... Nix-on-Droid can be set up with channels or with flakes (still experimental). Do you want to set it up with flakes? (y/N) y Setting up Nix-on-Droid with flakes... Installing flake from default template... wrote: /data/data/com.termux.nix/files/home/.config/nix-on-droid/flake.nix wrote: /data/data/com.termux.nix/files/home/.config/nix-on-droid/nix-on-droid.nix Overriding system value in the flake... Installing first Nix-on-Droid generation... Building activation package... warning: creating lock file '/data/data/com.termux.nix/files/home/.config/nix-on-droid/flake.lock' Executing activation script... Activating linkBinSh Activating linkUsrBinEnv Activating installLogin Activating installLoginInner Activating installPackages installing 'nix-on-droid-path' building '/nix/store/b900196ax35hjf6xbjgsylx81rxdz9zx-user-environment.drv'... Activating installProotStatic Activating setUpEtc Removing obsolete symlink '/etc/UNINTIALISED'... Activating unlinkColors Activating unlinkFont Activating linkProfile Congratulations! Now you have Nix installed with some default packages like bashInteractive, coreutils, cacert and, most importantly, Nix-on-Droid itself to manage local configuration, see nix-on-droid help or the flake ~/.config/nix-on-droid/ You can go for the bare Nix-on-Droid setup or you can configure your phone via home-manager. See other templates in github:nix-community/nix-on-droid/release-24.05. bash-5.2$ nix-shell -p powershell warning: Nix search path entry '/data/data/com.termux.nix/files/home/.nix-defexpr/channels/nixpkgs/' does not exist, ignoring error: … <borked> at «none»:0: (source not available) … while calling the 'import' builtin at «string»:1:18: 1| {...}@args: with import <nixpkgs> args; (pkgs.runCommandCC or pkgs.runCommand) "shell" { buildInputs = [ (powershell) ]; } "" | ^ (stack trace truncated; use '--show-trace' to show the full trace) error: file 'nixpkgs' was not found in the Nix search path (add it using $NIX_PATH or -I) at «none»:0: (source not available) bash-5.2$ nix profile install nixpkgs#powershell bash-5.2$
I do not know what --show-trace should be appended to.
My Environment
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The Application
versionName=0.118.0_v0.3.7_nix versionCode=188037
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The OS
[ro.build.version.release]: [15] [ro.build.display.id]: [FP5.VT2K.C.076.20251222]
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The Hardware
[ro.product.brand]: [Fairphone] [ro.build.product]: [FP5]