From 9e7539d8635a3933aa13fd62d6bad2b214285bb0 Mon Sep 17 00:00:00 2001
From: rootiest <chris@rootiest.com>
Date: Mon, 18 May 2026 22:23:10 -0400
Subject: [PATCH] feat(deps): support upgrading fish itself via cargo install
 fish

Fish 4.x is a Rust rewrite published to crates.io as 'fish'. Added the
crate to the catalog so fish-deps update will run cargo install --force
fish to upgrade it. A yellow restart reminder is printed after the
upgrade since the new binary won't take effect until the shell restarts.

README warning updated to mention cargo install fish as the upgrade
path for users stuck on Fish 3.x.
---
 README.md                         | 5 +++++
 functions/_fish_deps_catalog.fish | 2 +-
 functions/_fish_deps_update.fish  | 5 +++++
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index b9053a7..acee522 100644
--- a/README.md
+++ b/README.md
@@ -502,6 +502,11 @@ Named context shortcuts (e.g. `dcr`, `dck`) live in `~/.config/.user-dots/fish/l
 
 > [!WARNING]
 > Fish **4.0 or newer is required.** This config uses `test` syntax and other constructs that are incompatible with Fish 3.x. Older versions will produce errors on startup.
+> If you are on an older Fish, you can upgrade via cargo (Fish 4.x is a Rust rewrite published to crates.io):
+> ```
+> cargo install fish
+> ```
+> Or run `fish-deps update` once cargo is available — it will upgrade Fish via cargo automatically.
 
 ### Recommended
 
diff --git a/functions/_fish_deps_catalog.fish b/functions/_fish_deps_catalog.fish
index 5667f11..58105c8 100644
--- a/functions/_fish_deps_catalog.fish
+++ b/functions/_fish_deps_catalog.fish
@@ -25,7 +25,7 @@ function _fish_deps_catalog
         rec rec rec rec rec rec rec rec rec rec rec rec rec rec
 
     set -g _fdc_cargo \
-        "" "" "" starship "" zoxide "" "" \
+        fish "" "" starship "" zoxide "" "" \
         "" "" \
         eza lsd bat "" du-dust "" "" "" ripgrep "" "" trash-cli "" ""
 
diff --git a/functions/_fish_deps_update.fish b/functions/_fish_deps_update.fish
index 35d2b14..eff4cdd 100644
--- a/functions/_fish_deps_update.fish
+++ b/functions/_fish_deps_update.fish
@@ -75,6 +75,11 @@ function _fish_deps_update
             echo "Updating $bin..."
             cargo install --force $cargo_crate
             set updated_any 1
+            if test "$bin" = fish
+                set_color yellow
+                echo "  Fish updated — restart your shell to use the new version."
+                set_color normal
+            end
             set i (math $i + 1)
             continue
         end