fix(fish): complete Bazel labels without query

configs/nixos/modules/shell/fish/completions/bazel.fish

@@ -0,0 +1,146 @@
+set --query BAZEL_COMMAND_LIST; or set --global BAZEL_COMMAND_LIST analyze-profile aquery build canonicalize-flags clean coverage cquery dump fetch help info license mobile-install print_action query run shutdown test vendor version
+
+function __bazel_seen_subcommand --description "Checks whether the command line contains a Bazel subcommand."
+    __fish_seen_subcommand_from $BAZEL_COMMAND_LIST
+end
+
+function __bazel_workspace_root --description "Prints the nearest Bazel workspace root."
+    set --local dir (pwd)
+
+    while test "$dir" != /
+        if test -e "$dir/MODULE.bazel"; or test -e "$dir/WORKSPACE"; or test -e "$dir/WORKSPACE.bazel"
+            printf '%s\n' "$dir"
+            return 0
+        end
+
+        set dir (dirname "$dir")
+    end
+
+    return 1
+end
+
+function __bazel_build_file --description "Prints the BUILD file for a package."
+    set --local root $argv[1]
+    set --local package $argv[2]
+
+    if test -f "$root/$package/BUILD.bazel"
+        printf '%s\n' "$root/$package/BUILD.bazel"
+    else if test -f "$root/$package/BUILD"
+        printf '%s\n' "$root/$package/BUILD"
+    end
+end
+
+function __bazel_complete_package --description "Completes Bazel package paths with BUILD-file scanning."
+    set --local root $argv[1]
+    set --local token $argv[2]
+    set --local absolute_prefix ''
+    set --local rel "$token"
+
+    if string match --quiet '//*' -- "$token"
+        set absolute_prefix '//'
+        set rel (string sub --start 3 -- "$token")
+    end
+
+    set --local parent (string replace --regex '[^/]*$' '' -- "$rel")
+    set --local prefix (string replace --regex '^.*/' '' -- "$rel")
+    set --local search_dir "$root/$parent"
+
+    test -d "$search_dir"; or return 0
+
+    if test -z "$rel"
+        set --local root_build_file (__bazel_build_file "$root" "")
+        if test -n "$root_build_file"
+            printf '%s:\tpackage\n' "$absolute_prefix"
+        end
+    end
+
+    for dir in (find "$search_dir" -mindepth 1 -maxdepth 1 -type d -name "$prefix*" 2>/dev/null)
+        set --local name (basename "$dir")
+        set --local package "$parent$name"
+
+        switch "$package"
+            case .direnv .git bazel-bin bazel-dev bazel-out bazel-testlogs target
+                continue
+        end
+
+        printf '%s%s/\tdirectory\n' "$absolute_prefix" "$package"
+
+        set --local package_build_file (__bazel_build_file "$root" "$package")
+        if test -n "$package_build_file"
+            printf '%s%s:\tpackage\n' "$absolute_prefix" "$package"
+        end
+    end
+end
+
+function __bazel_current_subcommand --description "Prints the active Bazel subcommand."
+    for token in (commandline --tokens-expanded)
+        if contains -- "$token" $BAZEL_COMMAND_LIST
+            printf '%s\n' "$token"
+            return 0
+        end
+    end
+
+    return 1
+end
+
+function __bazel_target_kind_pattern --description "Prints the target rule-kind pattern for the active subcommand."
+    switch (__bazel_current_subcommand)
+        case test coverage
+            printf '(^|_)test$|^test_suite$\n'
+        case run
+            printf '(_binary$|_test$|^test_suite$)\n'
+        case '*'
+            printf '.*\n'
+    end
+end
+
+function __bazel_complete_target --description "Completes targets from the selected package BUILD file."
+    set --local root $argv[1]
+    set --local token $argv[2]
+    set --local absolute_prefix ''
+    set --local rel "$token"
+
+    if string match --quiet '//*' -- "$token"
+        set absolute_prefix '//'
+        set rel (string sub --start 3 -- "$token")
+    end
+
+    set --local package (string replace --regex ':.*$' '' -- "$rel")
+    set --local target_prefix (string replace --regex '^.*:' '' -- "$rel")
+    set --local build_file (__bazel_build_file "$root" "$package")
+    set --local kind_pattern (__bazel_target_kind_pattern)
+
+    test -n "$build_file"; or return 0
+
+    awk -v prefix="$target_prefix" -v kind_pattern="$kind_pattern" '
+        match($0, /^[[:space:]]*([A-Za-z_][A-Za-z0-9_]*)[[:space:]]*\(/, rule) {
+            kind = rule[1]
+        }
+
+        match($0, /(^|[[:space:]])name[[:space:]]*=[[:space:]]*"([^"]+)"/, target) {
+            if (kind ~ kind_pattern && index(target[2], prefix) == 1) {
+                print target[2]
+            }
+        }
+    ' "$build_file" | while read --local target
+        printf '%s%s:%s\ttarget\n' "$absolute_prefix" "$package" "$target"
+    end
+end
+
+function __bazel_complete_label --description "Completes local Bazel labels without running Bazel query."
+    set --local token (commandline --current-token)
+    string match --quiet -- '-*' "$token"; and return 0
+    string match --quiet -- '@*' "$token"; and return 0
+
+    set --local root (__bazel_workspace_root); or return 0
+
+    if string match --quiet '*:*' -- "$token"
+        __bazel_complete_target "$root" "$token"
+    else
+        __bazel_complete_package "$root" "$token"
+    end
+end
+
+complete -c bazel -e
+complete -c bazel -f -n "not __bazel_seen_subcommand" -a "$BAZEL_COMMAND_LIST"
+complete -c bazel -f -n "__fish_seen_subcommand_from build coverage fetch mobile-install print_action query run test" -a "(__bazel_complete_label)"

configs/nixos/modules/shell/fish/default.nix

@@ -37,6 +37,8 @@ in
         fastfetch # the shell greeting
       ];
 
+      xdg.configFile."fish/completions/bazel.fish".source = ./completions/bazel.fish;
+
       programs.fish = {
         enable = true;