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home-manager/modules/programs/git.nix
Emily 9f9e277b60 treewide: remove now-redundant lib.mdDoc calls
These (and the `*MD` functions apart from `literalMD`) are now no-ops
in nixpkgs and serve no purpose other than to add additional noise and
potentially mislead people into thinking unmarked DocBook documentation
will still be accepted.

Note that if backporting changes including documentation to 23.05,
the `mdDoc` calls will need to be re-added.

To reproduce this commit, run:

    $ NIX_PATH=nixpkgs=flake:nixpkgs/e7e69199f0372364a6106a1e735f68604f4c5a25 \
      nix shell nixpkgs#coreutils \
      -c find . -name '*.nix' \
      -exec nix run -- github:emilazy/nix-doc-munge/98dadf1f77351c2ba5dcb709a2a171d655f15099 \
      --strip {} +
    $ ./format
2023-07-17 18:49:09 +01:00

571 lines
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{ config, lib, pkgs, ... }:
with lib;
let
cfg = config.programs.git;
# create [section "subsection"] keys from "section.subsection" attrset names
mkSectionName = name:
let
containsQuote = strings.hasInfix ''"'' name;
sections = splitString "." name;
section = head sections;
subsections = tail sections;
subsection = concatStringsSep "." subsections;
in if containsQuote || subsections == [ ] then
name
else
''${section} "${subsection}"'';
mkValueString = v:
let
escapedV = ''
"${
replaceStrings [ "\n" " " ''"'' "\\" ] [ "\\n" "\\t" ''\"'' "\\\\" ] v
}"'';
in generators.mkValueStringDefault { } (if isString v then escapedV else v);
# generation for multiple ini values
mkKeyValue = k: v:
let
mkKeyValue =
generators.mkKeyValueDefault { inherit mkValueString; } " = " k;
in concatStringsSep "\n" (map (kv: " " + mkKeyValue kv) (toList v));
# converts { a.b.c = 5; } to { "a.b".c = 5; } for toINI
gitFlattenAttrs = let
recurse = path: value:
if isAttrs value then
mapAttrsToList (name: value: recurse ([ name ] ++ path) value) value
else if length path > 1 then {
${concatStringsSep "." (reverseList (tail path))}.${head path} = value;
} else {
${head path} = value;
};
in attrs: foldl recursiveUpdate { } (flatten (recurse [ ] attrs));
gitToIni = attrs:
let toIni = generators.toINI { inherit mkKeyValue mkSectionName; };
in toIni (gitFlattenAttrs attrs);
gitIniType = with types;
let
primitiveType = either str (either bool int);
multipleType = either primitiveType (listOf primitiveType);
sectionType = attrsOf multipleType;
supersectionType = attrsOf (either multipleType sectionType);
in attrsOf supersectionType;
signModule = types.submodule {
options = {
key = mkOption {
type = types.nullOr types.str;
description = ''
The default GPG signing key fingerprint.
Set to `null` to let GnuPG decide what signing key
to use depending on commits author.
'';
};
signByDefault = mkOption {
type = types.bool;
default = false;
description = "Whether commits and tags should be signed by default.";
};
gpgPath = mkOption {
type = types.str;
default = "${pkgs.gnupg}/bin/gpg2";
defaultText = "\${pkgs.gnupg}/bin/gpg2";
description = "Path to GnuPG binary to use.";
};
};
};
includeModule = types.submodule ({ config, ... }: {
options = {
condition = mkOption {
type = types.nullOr types.str;
default = null;
description = ''
Include this configuration only when {var}`condition`
matches. Allowed conditions are described in
{manpage}`git-config(1)`.
'';
};
path = mkOption {
type = with types; either str path;
description = "Path of the configuration file to include.";
};
contents = mkOption {
type = types.attrsOf types.anything;
default = { };
example = literalExpression ''
{
user = {
email = "bob@work.example.com";
name = "Bob Work";
signingKey = "1A2B3C4D5E6F7G8H";
};
commit = {
gpgSign = true;
};
};
'';
description = ''
Configuration to include. If empty then a path must be given.
This follows the configuration structure as described in
{manpage}`git-config(1)`.
'';
};
contentSuffix = mkOption {
type = types.str;
default = "gitconfig";
description = ''
Nix store name for the git configuration text file,
when generating the configuration text from nix options.
'';
};
};
config.path = mkIf (config.contents != { }) (mkDefault
(pkgs.writeText (hm.strings.storeFileName config.contentSuffix)
(gitToIni config.contents)));
});
in {
meta.maintainers = [ maintainers.rycee ];
options = {
programs.git = {
enable = mkEnableOption "Git";
package = mkOption {
type = types.package;
default = pkgs.git;
defaultText = literalExpression "pkgs.git";
description = ''
Git package to install. Use {var}`pkgs.gitAndTools.gitFull`
to gain access to {command}`git send-email` for instance.
'';
};
userName = mkOption {
type = types.nullOr types.str;
default = null;
description = "Default user name to use.";
};
userEmail = mkOption {
type = types.nullOr types.str;
default = null;
description = "Default user email to use.";
};
aliases = mkOption {
type = types.attrsOf types.str;
default = { };
example = { co = "checkout"; };
description = "Git aliases to define.";
};
signing = mkOption {
type = types.nullOr signModule;
default = null;
description = "Options related to signing commits using GnuPG.";
};
extraConfig = mkOption {
type = types.either types.lines gitIniType;
default = { };
example = {
core = { whitespace = "trailing-space,space-before-tab"; };
url."ssh://git@host".insteadOf = "otherhost";
};
description = ''
Additional configuration to add. The use of string values is
deprecated and will be removed in the future.
'';
};
hooks = mkOption {
type = types.attrsOf types.path;
default = { };
example = literalExpression ''
{
pre-commit = ./pre-commit-script;
}
'';
description = ''
Configuration helper for Git hooks.
See <https://git-scm.com/docs/githooks>
for reference.
'';
};
iniContent = mkOption {
type = gitIniType;
internal = true;
};
ignores = mkOption {
type = types.listOf types.str;
default = [ ];
example = [ "*~" "*.swp" ];
description = "List of paths that should be globally ignored.";
};
attributes = mkOption {
type = types.listOf types.str;
default = [ ];
example = [ "*.pdf diff=pdf" ];
description = "List of defining attributes set globally.";
};
includes = mkOption {
type = types.listOf includeModule;
default = [ ];
example = literalExpression ''
[
{ path = "~/path/to/config.inc"; }
{
path = "~/path/to/conditional.inc";
condition = "gitdir:~/src/dir";
}
]
'';
description = "List of configuration files to include.";
};
lfs = {
enable = mkEnableOption "Git Large File Storage";
skipSmudge = mkOption {
type = types.bool;
default = false;
description = ''
Skip automatic downloading of objects on clone or pull.
This requires a manual {command}`git lfs pull`
every time a new commit is checked out on your repository.
'';
};
};
difftastic = {
enable = mkEnableOption "" // {
description = ''
Enable the {command}`difftastic` syntax highlighter.
See <https://github.com/Wilfred/difftastic>.
'';
};
background = mkOption {
type = types.enum [ "light" "dark" ];
default = "light";
example = "dark";
description = ''
Determines whether difftastic should use the lighter or darker colors
for syntax highlighting.
'';
};
color = mkOption {
type = types.enum [ "always" "auto" "never" ];
default = "auto";
example = "always";
description = ''
Determines when difftastic should color its output.
'';
};
display = mkOption {
type =
types.enum [ "side-by-side" "side-by-side-show-both" "inline" ];
default = "side-by-side";
example = "inline";
description = ''
Determines how the output displays - in one column or two columns.
'';
};
};
delta = {
enable = mkEnableOption "" // {
description = ''
Whether to enable the {command}`delta` syntax highlighter.
See <https://github.com/dandavison/delta>.
'';
};
package = mkPackageOption pkgs "delta" { };
options = mkOption {
type = with types;
let
primitiveType = either str (either bool int);
sectionType = attrsOf primitiveType;
in attrsOf (either primitiveType sectionType);
default = { };
example = {
features = "decorations";
whitespace-error-style = "22 reverse";
decorations = {
commit-decoration-style = "bold yellow box ul";
file-style = "bold yellow ul";
file-decoration-style = "none";
};
};
description = ''
Options to configure delta.
'';
};
};
diff-so-fancy = {
enable = mkEnableOption "" // {
description = ''
Enable the {command}`diff-so-fancy` diff colorizer.
See <https://github.com/so-fancy/diff-so-fancy>.
'';
};
pagerOpts = mkOption {
type = types.listOf types.str;
default = [ "--tabs=4" "-RFX" ];
description = ''
Arguments to be passed to {command}`less`.
'';
};
markEmptyLines = mkOption {
type = types.bool;
default = true;
example = false;
description = ''
Whether the first block of an empty line should be colored.
'';
};
changeHunkIndicators = mkOption {
type = types.bool;
default = true;
example = false;
description = ''
Simplify git header chunks to a more human readable format.
'';
};
stripLeadingSymbols = mkOption {
type = types.bool;
default = true;
example = false;
description = ''
Whether the `+` or `-` at
line-start should be removed.
'';
};
useUnicodeRuler = mkOption {
type = types.bool;
default = true;
example = false;
description = ''
By default, the separator for the file header uses Unicode
line-drawing characters. If this is causing output errors on
your terminal, set this to false to use ASCII characters instead.
'';
};
rulerWidth = mkOption {
type = types.nullOr types.int;
default = null;
example = false;
description = ''
By default, the separator for the file header spans the full
width of the terminal. Use this setting to set the width of
the file header manually.
'';
};
};
};
};
config = mkIf cfg.enable (mkMerge [
{
home.packages = [ cfg.package ];
assertions = [{
assertion = let
enabled =
[ cfg.delta.enable cfg.diff-so-fancy.enable cfg.difftastic.enable ];
in count id enabled <= 1;
message =
"Only one of 'programs.git.delta.enable' or 'programs.git.difftastic.enable' or 'programs.git.diff-so-fancy.enable' can be set to true at the same time.";
}];
programs.git.iniContent.user = {
name = mkIf (cfg.userName != null) cfg.userName;
email = mkIf (cfg.userEmail != null) cfg.userEmail;
};
xdg.configFile = {
"git/config".text = gitToIni cfg.iniContent;
"git/ignore" = mkIf (cfg.ignores != [ ]) {
text = concatStringsSep "\n" cfg.ignores + "\n";
};
"git/attributes" = mkIf (cfg.attributes != [ ]) {
text = concatStringsSep "\n" cfg.attributes + "\n";
};
};
}
{
programs.git.iniContent = let
hasSmtp = name: account: account.smtp != null;
genIdentity = name: account:
with account;
nameValuePair "sendemail.${name}" (if account.msmtp.enable then {
smtpServer = "${pkgs.msmtp}/bin/msmtp";
envelopeSender = "auto";
from = address;
} else
{
smtpEncryption = if smtp.tls.enable then
(if smtp.tls.useStartTls
|| versionOlder config.home.stateVersion "20.09" then
"tls"
else
"ssl")
else
"";
smtpSslCertPath =
mkIf smtp.tls.enable (toString smtp.tls.certificatesFile);
smtpServer = smtp.host;
smtpUser = userName;
from = address;
} // optionalAttrs (smtp.port != null) {
smtpServerPort = smtp.port;
});
in mapAttrs' genIdentity
(filterAttrs hasSmtp config.accounts.email.accounts);
}
(mkIf (cfg.signing != null) {
programs.git.iniContent = {
user.signingKey = mkIf (cfg.signing.key != null) cfg.signing.key;
commit.gpgSign = mkDefault cfg.signing.signByDefault;
tag.gpgSign = mkDefault cfg.signing.signByDefault;
gpg.program = cfg.signing.gpgPath;
};
})
(mkIf (cfg.hooks != { }) {
programs.git.iniContent = {
core.hooksPath = let
entries =
mapAttrsToList (name: path: { inherit name path; }) cfg.hooks;
in toString (pkgs.linkFarm "git-hooks" entries);
};
})
(mkIf (cfg.aliases != { }) { programs.git.iniContent.alias = cfg.aliases; })
(mkIf (lib.isAttrs cfg.extraConfig) {
programs.git.iniContent = cfg.extraConfig;
})
(mkIf (lib.isString cfg.extraConfig) {
warnings = [''
Using programs.git.extraConfig as a string option is
deprecated and will be removed in the future. Please
change to using it as an attribute set instead.
''];
xdg.configFile."git/config".text = cfg.extraConfig;
})
(mkIf (cfg.includes != [ ]) {
xdg.configFile."git/config".text = let
include = i:
with i;
if condition != null then {
includeIf.${condition}.path = "${path}";
} else {
include.path = "${path}";
};
in mkAfter
(concatStringsSep "\n" (map gitToIni (map include cfg.includes)));
})
(mkIf cfg.lfs.enable {
home.packages = [ pkgs.git-lfs ];
programs.git.iniContent.filter.lfs =
let skipArg = optional cfg.lfs.skipSmudge "--skip";
in {
clean = "git-lfs clean -- %f";
process =
concatStringsSep " " ([ "git-lfs" "filter-process" ] ++ skipArg);
required = true;
smudge = concatStringsSep " "
([ "git-lfs" "smudge" ] ++ skipArg ++ [ "--" "%f" ]);
};
})
(mkIf cfg.difftastic.enable {
home.packages = [ pkgs.difftastic ];
programs.git.iniContent = let
difftCommand = concatStringsSep " " [
"${pkgs.difftastic}/bin/difft"
"--color ${cfg.difftastic.color}"
"--background ${cfg.difftastic.background}"
"--display ${cfg.difftastic.display}"
];
in { diff.external = difftCommand; };
})
(let
deltaPackage = cfg.delta.package;
deltaCommand = "${deltaPackage}/bin/delta";
in mkIf cfg.delta.enable {
home.packages = [ deltaPackage ];
programs.git.iniContent = {
core.pager = deltaCommand;
interactive.diffFilter = "${deltaCommand} --color-only";
delta = cfg.delta.options;
};
})
(mkIf cfg.diff-so-fancy.enable {
home.packages = [ pkgs.diff-so-fancy ];
programs.git.iniContent =
let dsfCommand = "${pkgs.diff-so-fancy}/bin/diff-so-fancy";
in {
core.pager = "${dsfCommand} | ${pkgs.less}/bin/less ${
escapeShellArgs cfg.diff-so-fancy.pagerOpts
}";
interactive.diffFilter = "${dsfCommand} --patch";
diff-so-fancy = {
markEmptyLines = cfg.diff-so-fancy.markEmptyLines;
changeHunkIndicators = cfg.diff-so-fancy.changeHunkIndicators;
stripLeadingSymbols = cfg.diff-so-fancy.stripLeadingSymbols;
useUnicodeRuler = cfg.diff-so-fancy.useUnicodeRuler;
rulerWidth = mkIf (cfg.diff-so-fancy.rulerWidth != null)
(cfg.diff-so-fancy.rulerWidth);
};
};
})
]);
}