By default, DevShell of haskell-flake projects includes haskell-language-server and a few other tools by default.
Disabling haskell-language-server
Default options
Alternatively, disabling the default options (i.e., haskellProjects.<proj-name>.defaults.enable = false;) automatically removes HLS.
HLS is included as part of the default value of devShell.tools options. You can override this default by overriding it, for e.g.:
{
haskellProjects.<proj-name> = {
# NOTE: This is 'defaults.devShell.tools', not 'devShell.tools'
defaults.devShell.tools = hp: with hp; {
inherit
cabal-install
ghcid;
};
};
}
Alternatively, you can set it to null at a project-level:
{
haskellProjects.<proj-name> = {
# NOTE: This is 'devShell.tools', not 'defaults.devShell.tools'
devShell.tools = {
haskell-language-server = null;
};
};
}