make cargo lock

justfile

@@ -1198,6 +1198,38 @@ enqueue-nixpkgs-review *$prs:
     done
 
 
+#  === patch helpers ===
+
+[no-cd]
+make-cargo-lock-patch $attrpath=`just _a_package`:
+    #!/usr/bin/env -S bash -euo pipefail
+    cargo_path=$( nix-build . -A cargo --no-out-link )
+    src_unpacked=$( NIX_PATH="nixpkgs-overlays=$(realpath "{{rootdir}}/overlays.nix")" nix-build . -A ${attrpath}.src.unpacked --no-out-link )
+    cargo_lock=$(fzf --walker=file,hidden --walker-root "$src_unpacked/" --query Cargo.lock)
+    [[ -s "$cargo_lock" ]]
+    cargo_toml=$(sed <<<"$cargo_lock" -e "s/\.lock$/.toml/")
+    [[ -s "$cargo_toml" ]]
+
+    TMP_DIR=$(mktemp -d)
+    $cargo_path/bin/cargo generate-lockfile --manifest-path "$cargo_toml" -Z unstable-options --lockfile-path "$TMP_DIR/Cargo.lock"
+    delta "$cargo_lock" "$TMP_DIR/Cargo.lock" --paging never ||:
+
+    attrdir=$(dirname "$(nix eval --log-format raw --file default.nix "$attrpath".meta.position --raw | cut -d: -f1 ||:)" ||:)
+    if [[ -n "${attrdir:-}" && -d "$attrdir"  ]]; then
+      fd . "${attrdir}/" --type file --list-details
+    fi
+    echo "Where to put the patch?"
+    dest=$(gum input --value="$(realpath --canonicalize-missing "${attrdir:-.}/cargo-lock.patch")")
+    [[ -n "$dest" ]]
+    [[ ! -f "$dest" ]] || gum confirm "WARNING: '$dest' exists, overwrite?"
+    {
+      echo "--- $(realpath "$cargo_lock" | cut -d/ -f5-)"
+      echo "+++ $(realpath "$cargo_lock" | cut -d/ -f5-)"
+      diff --unified "$cargo_lock" "$TMP_DIR/Cargo.lock" | tail -n+3
+    } >"$dest"  ||:
+    echo "$dest"
+
+
 #  === format helpers ===
 
 [no-cd]