jbadeau
nix-portable compatibility - not finding /nix
I'm using a Fedora Silverblue repository and it doesn't play nicely with nix.
As a result, I'm using https://github.com/DavHau/nix-portable - see https://universal-blue.discourse.group/t/nix-installation-is-gone-after-getting-fedora-42/8500/3?u=jcrben
As a result, mise install nix:[email protected] doesn't work.
➜ mise install nix:[email protected]
mise mise 2025.8.16 by @jdx – ░░░░░░░░░░░░░░░░░░░░ 0/1
mise nix:[email protected] install ⠁ 0s🔨 Installing [email protected]...
mise mise 2025.8.16 by @jdx – ░░░░░░░░░░░░░░░░░░░░ 0/1
mise nix:[email protected] install ⠒ 19s⚠️ No binaries found. This package may be a library or data-only.
mise ERROR Failed to install tool: nix:[email protected]
nix:[email protected]:
0: failed to install nix:[email protected]
1: Backend install method failed
2: runtime error: ...iles/local/xdgdata/mise/plugins/nix/lib/platform.lua:125: Built package path does not exist: /nix/store/nndmy96lswhxc4xp49n950i1905qlfpy-hello-2.10
stack traceback:
[C]: in function 'error'
...iles/local/xdgdata/mise/plugins/nix/lib/platform.lua:125: in function 'verify_build'
...files/local/xdgdata/mise/plugins/nix/lib/install.lua:59: in function 'from_nixhub'
...l/xdgdata/mise/plugins/nix/hooks/backend_install.lua:55: in function <...l/xdgdata/mise/plugins/nix/hooks/backend_install.lua:11>
(tail call): in function <(tail call):-1>
Location:
src/backend/vfox.rs:113
Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.
mise ERROR Run with --verbose or MISE_VERBOSE=1 for more information
mise mise 2025.8.16 by @jdx – install ⠐ 20s
ben in sync on master [+] is v1.0.0 via v18.20.8 took 19s
It seems that it's a general nix issue. This plugin depends on a working setup. Can you pull use the package with raw nix? If not then mise-nix will not work either.
https://github.com/cachix/devenv works well w/ nix-portable. I feel like it should be possible to support it
I expect it will work fine w/ raw nix, can try it with regular nix eventually but I'm not gonna use it that way since regular nix isn't compatible with Fedora Silverblue
nix-portable virtualizes /nix/store https://github.com/DavHau/nix-portable/blob/42803a3036650ad06dc4c341d2e402a8148513e8/default.nix#L281
~~May need to hook into the NP_RUNTIME=bwrap
I ran export NP_RUNTIME=bwrap and then tried it~~
Once I commented out https://github.com/jbadeau/mise-nix/blob/5c5496bcf9929a67425688fe2ad193d20d295dee/lib/platform.lua#L124-L126 it didn't spit out any errors
I found it inside ~/.nix-portable/nix/store but it failed:
cowsay failed with a similar message
ben in nix/store/nndmy96lswhxc4xp49n950i1905qlfpy-hello-2.10
➜ ./bin/hello
bash: ./bin/hello: cannot execute: required file not found
➜ strace ./bin/cowsay hmm
execve("./bin/cowsay", ["./bin/cowsay", "hmm"], 0x7ffcc22e1e68 /* 130 vars */) = -1 ENOENT (No such file or directory)
strace: exec: No such file or directory
+++ exited with 1 +++
➜ MISE_VERBOSE=1 mise install nix:[email protected]
DEBUG Version: 2025.8.16 linux-x64 (2025-08-21)
DEBUG ARGS: /home/ben/.local/bin/mise install nix:[email protected]
DEBUG config: /var/home/ben/mise.toml
DEBUG config: /var/home/ben/.config/mise/config.toml
INFO mise 2025.8.16 by @jdx – install
DEBUG install_some_versions: nix:[email protected]
DEBUG Using backend method for plugin: nix
DEBUG [vfox:nix] backend_list_versions
DEBUG Getting metadata for nix
DEBUG starting new connection: https://www.nixhub.io/
INFO nix:[email protected] install
DEBUG [vfox:nix] backend_install
DEBUG Getting metadata for nix
🐛 Starting nixhub resolution for [email protected]
🐛 Version resolution took 1s
🔨 Installing [email protected]...
🐛 Starting nix build: nix build --no-link --print-out-paths "github:NixOS/nixpkgs/942b0817e898262cc6e3f0a5f706ce09d8f749f1#hello"
ℹ️ Resolving package...
🐛 Nix build took 0s
⚠️ No binaries found. This package may be a library or data-only.
💡 Using first available output for symlinking or build environment use.
Error:
0: Failed to install tool: nix:[email protected]
nix:[email protected]:
0: failed to install nix:[email protected]
1: Backend install method failed
2: runtime error: ...iles/local/xdgdata/mise/plugins/nix/lib/platform.lua:125: Built package path does not exist: /nix/store/nndmy96lswhxc4xp49n950i1905qlfpy-hello-2.10
stack traceback:
[C]: in function 'error'
...iles/local/xdgdata/mise/plugins/nix/lib/platform.lua:125: in function 'verify_build'
...files/local/xdgdata/mise/plugins/nix/lib/install.lua:59: in function 'from_nixhub'
...l/xdgdata/mise/plugins/nix/hooks/backend_install.lua:55: in function <...l/xdgdata/mise/plugins/nix/hooks/backend_install.lua:11>
(tail call): in function <(tail call):-1>
Location:
src/backend/vfox.rs:113
Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.
Location:
src/toolset/mod.rs:256
Version:
2025.8.16 linux-x64 (2025-08-21)
Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.
ben in sync on master [+] is v1.0.0 via v18.20.8
➜ nix build --no-link --print-out-paths "github:NixOS/nixpkgs/942b0817e898262cc6e3f0a5f706ce09d8f749f1#hello"
/nix/store/nndmy96lswhxc4xp49n950i1905qlfpy-hello-2.10
I vibe-coded compatibility with nix-portable https://github.com/jbadeau/mise-nix/compare/main...jcrben:mise-nix:main
Understandable if that's not something you want to support. Didn't get 100% of the way there as it requires a wrapper script - think I could get past that tho eventually
I’ll have a go at it next week. I’m pretty new to nix so need to know what nix portable is doing.