nixpkgs/nixos/doc/manual/from_md
Guillaume Bouchard d1b6d2d0ab haskellPackages.callHackage: updating all-cabal-hashes do not invalidate callHackage
Packages built with `haskellPackages.callHackage` won't be rebuilt when
updating `all-cabal-hashes`.

The removed comment was keeping a reference to the `cabal2nix` call,
which itself depends on `all-cabal-hashes`, in order to keep this file
during a garbage collection.

The tradeoff is between:

- The current behavior: a mass rebuild, any change of `all-cabal-hashes`
  triggers a rebuild of all the packages built with `callHackage` and
  packages which depend on them. This can take hours, and may happen
  after a "small" unrelated change (i.e. an user is bumping
  `all-cabal-hashes` in order to use a new package from hackage). It
  also have global impacts in a project (long rebuild in CI, new entries
  in cache, developers need to fetch the new entries, ...). In this
  context, `cabal2nix` entries are not garbage collected.
- The new behavior: No mass rebuild, but `cabal2nix` derivations need to
  be recomputed after a garbage collection. This is usually fast (a few
  seconds by call), linear with the number of calls and should not
  happen a lot (i.e. users are not garbage collecting everyday).

See https://github.com/NixOS/nixpkgs/issues/194751 for details.
2022-11-26 19:00:56 +01:00
..
administration treewide: change postgresql_10 in documentation and examples to postgresql_14 2022-08-15 22:36:32 +02:00
configuration nixos/manual: Don't recommend mkpasswd methods 2022-11-19 14:07:59 +01:00
development nixos/manual: re-add mention of mdDoc marker 2022-11-14 16:05:44 +01:00
installation Merge pull request #201084 from wentasah/nixos-doc-fix-install 2022-11-22 11:13:09 +01:00
release-notes haskellPackages.callHackage: updating all-cabal-hashes do not invalidate callHackage 2022-11-26 19:00:56 +01:00
contributing-to-this-manual.chapter.xml
README.md

This directory is temporarily needed while we transition the manual to CommonMark. It stores the output of the ../md-to-db.sh script that converts CommonMark files back to DocBook.

We are choosing to convert the Markdown to DocBook at authoring time instead of manual building time, because we do not want the pandoc toolchain to become part of the NixOS closure.

Do not edit the DocBook files inside this directory or its subdirectories. Instead, edit the corresponding .md file in the normal manual directories, and run ../md-to-db.sh to update the file here.