lix/doc/manual/rl-next/upgrade-nix-profile-compat.md

---
synopsis: using `nix profile` on `/nix/var/nix/profiles/default` no longer breaks `nix upgrade-nix`
cls: 952
credits: Qyriad
category: Fixes
---

On non-NixOS, Nix is conventionally installed into a `nix-env` style profile at /nix/var/nix/profiles/default.
Like any `nix-env` profile, using `nix profile` on it automatically migrates it to a `nix profile` style profile, which is incompatible with `nix-env`.
`nix upgrade-nix` previously relied solely on `nix-env` to do the upgrade, but now will work fine with either kind of profile.
fix `nix upgrade-nix` on new-style profiles nix3-profile automatically migrates any profile its used on to its style of profile -- the ones with manifest.json instead of manifest.nix. On non-NixOS systems, Nix is conventionally installed to the profile at /nix/var/nix/profiles/default, so if a user passed that to `--profile` of `nix profile`, then it would break upgrade-nix from ever working again, without recreating the profile. This commit fixes that, and allows upgrade-nix to work on either kind of profile. Fixes #16. Change-Id: I4c49b1beba93bb50e8f8a107edc451affe08c3f7 2024-04-27 23:28:56 +00:00			`---`
			synopsis: using `nix profile` on `/nix/var/nix/profiles/default` no longer breaks `nix upgrade-nix`
			`cls: 952`
doc: add release note credits and categories for all the changes in Lix This does not add missing release notes, and it doesn't do anything about the profiles feature we would really like to have so we can have consistent credit. Change-Id: I72a6f7acfcff85f380be17dac76501a6f4693776 2024-05-15 02:14:58 +00:00			`credits: Qyriad`
			`category: Fixes`
fix `nix upgrade-nix` on new-style profiles nix3-profile automatically migrates any profile its used on to its style of profile -- the ones with manifest.json instead of manifest.nix. On non-NixOS systems, Nix is conventionally installed to the profile at /nix/var/nix/profiles/default, so if a user passed that to `--profile` of `nix profile`, then it would break upgrade-nix from ever working again, without recreating the profile. This commit fixes that, and allows upgrade-nix to work on either kind of profile. Fixes #16. Change-Id: I4c49b1beba93bb50e8f8a107edc451affe08c3f7 2024-04-27 23:28:56 +00:00			`---`

			On non-NixOS, Nix is conventionally installed into a `nix-env` style profile at /nix/var/nix/profiles/default.
			Like any `nix-env` profile, using `nix profile` on it automatically migrates it to a `nix profile` style profile, which is incompatible with `nix-env`.
			`nix upgrade-nix` previously relied solely on `nix-env` to do the upgrade, but now will work fine with either kind of profile.