Remove Nix files.

I am no longer using Nix for managing user packages, and I have no
interest in actually maintaining these files.

* git-email.texi (Installation): Remove Nix installation instructions.
* default.nix, flake.lock, flake.nix: Remove files.

Signed-off-by: Xinglu Chen <public@yoctocell.xyz>

1 files changed, 0 insertions, 40 deletions

diff --git a/default.nix b/default.nix
deleted file mode 100644
index 765b92a..0000000
--- a/default.nix
+++ /dev/null
@@ -1,40 +0,0 @@
-{ lib, fetchgit, nix-gitignore, emacsPackages }:
-let
-  inherit (emacsPackages) trivialBuild;
-  flakeRoot = toString ../.;
-in
-lib.recurseIntoAttrs rec {
-
-  git-email-full-git = trivialBuild rec {
-    pname = "git-email-full";
-    version = "master";
-    src = nix-gitignore.gitignoreSource (flakeRoot + ".gitignore") ./.;
-    packageRequires = with emacsPackages; [
-      magit
-      transient
-      notmuch
-    ];
-  };
-
-  git-email-git = trivialBuild rec {
-    pname = "git-email";
-    version = "master";
-    src = builtins.filterSource
-      (path: type:
-        baseNameOf path != "git-email-magit.el" &&
-        baseNameOf path != "git-email-notmuch.el" &&
-        baseNameOf path != "git-email-gnus.el"
-      ) ./.;
-  };
-
-  git-email = trivialBuild rec {
-    pname = "git-email";
-    version = "0.1.0";
-    src = fetchgit {
-      url = "https://git.sr.ht/~yoctocell/git-email";
-      rev = version;
-      sha256 = "EJ9+/tA7mKn2HQE3kU4HdCbQXtjWUeaUiqnq4HUb+2o=";
-    };
-  };
-
-}