nix - install sourcegraph cli

Author: ryuheechul

nix/pkgs/custom/src-cli.nix

@@ -0,0 +1,6 @@
+let
+  rev = "0c80e917b50eb934c9324e44961538e0826a6f58";
+  # until this merges to upstream, https://github.com/sourcegraph/src-cli
+  url = "https://github.com/ryuheechul/src-cli/archive/${rev}.tar.gz";
+in
+(import (fetchTarball url)).default

nix/pkgs/lang/support.nix

@@ -3,6 +3,7 @@
 let
   checkEnv = import ../../utils/checkEnv.nix;
   devenv = import ../custom/devenv.nix;
+  src-cli = import ../custom/src-cli.nix;
 in
 with pkgs;
 [ ]
@@ -11,6 +12,7 @@ with pkgs;
     git-lfs # git extention for large file storage
     pre-commit # for managing multi-language pre-commit hooks
     gitwatch # Watch a file or folder and automatically commit changes to a git repo easily.
+    src-cli # Sourcegraph CLI
   ]
 ++ lib.optionals (checkEnv "MY_NIX_EXTRA_DEVENV")
   # devenv is not a language but help a quick setup of a dev environment for many languages