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| author | Zubin Duggal <zubin.duggal@gmail.com> | 2021-11-17 19:24:41 +0530 |
|---|---|---|
| committer | Zubin Duggal <zubin.duggal@gmail.com> | 2022-01-31 16:51:55 +0530 |
| commit | ee5c4f9d05fab41f53364dc18d30932034e6ada6 (patch) | |
| tree | 78cbe08a9d4654eb3e5ebe2dd17b3c1cced1df51 /docs/users_guide | |
| parent | 3531c4784c0a06063dcfc0f084943d5149e64035 (diff) | |
| download | haskell-ee5c4f9d05fab41f53364dc18d30932034e6ada6.tar.gz | |
Improve migration strategy for the XDG compliance change to the GHC application
directory.
We want to always use the old path (~/.ghc/..) if it exists.
But we never want to create the old path.
This ensures that the migration can eventually be completed once older GHC
versions are no longer in circulation.
Fixes #20684, #20669, #20660
Diffstat (limited to 'docs/users_guide')
| -rw-r--r-- | docs/users_guide/9.4.1-notes.rst | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/docs/users_guide/9.4.1-notes.rst b/docs/users_guide/9.4.1-notes.rst index 8140a367aa..75e7268cc1 100644 --- a/docs/users_guide/9.4.1-notes.rst +++ b/docs/users_guide/9.4.1-notes.rst @@ -67,6 +67,25 @@ Compiler - Support for Sun SPARC architecture has been dropped (:ghc-ticket:`16883`). +- A fix for GHC's handling of the XDG Base Directory Specification + (:ghc-ticket:`6077`, :ghc-ticket:`20684`, :ghc-ticket:`20669`, + :ghc-ticket:`20660`): + + - For the package database previously in `~/.ghc/<arch-ver>`, we + will continue to use the old path if it exists. For example, if the + `~/.ghc/x86_64-linux-9.4.1` directory exists, GHC will use that for its + user package database. If this directory does not exist, we will use + `$XDG_DATA_HOME/ghc/x86_64-linux-9.4.1`. This is in order to give tooling like + cabal time to migrate + + - For GHCi configuration files previously located in `~/.ghc/` like + `ghci.conf` and `ghci_history`, we will first check if they exist in + `~/.ghc` and use those if they do. However, we will create new files like + `ghci_history` only in `$XDG_DATA_HOME/ghc`. So if you don't have a previous + GHC installation which created `~/.ghc/ghci_history`, the history file will be + written to `$XDG_DATA_HOME/ghc`. If you already have an older GHC installation which + wrote `~/.ghc/ghci_history`, then GHC will continue to write the history to that file. + ``base`` library ~~~~~~~~~~~~~~~~ |