Install this version:
emerge -a =app-emacs/lsp-dart-20260507.1741
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =app-emacs/lsp-dart-20260507.1741
Or alternatively:
emerge --autounmask-write -a =app-emacs/lsp-dart-20260507.1741
# automatically generated by g-sorcery
# please do not edit this file
EAPI=8
REPO_URI="https://melpa.org/packages/"
SOURCE_TYPE="tar"
REALNAME="lsp-dart"
DIGEST_SOURCES="yes"
inherit g-sorcery gs-elpa
DESCRIPTION="Dart support lsp-mode"
HOMEPAGE="https://emacs-lsp.github.io/lsp-dart"
SRC_URI="${REPO_URI}${REALNAME}-${PV}.${SUFFIX}"
SLOT="0"
KEYWORDS="~amd64 ~x86"
DEPEND="app-emacs/lsp-treemacs
app-emacs/lsp-mode
app-emacs/dap-mode
app-emacs/f
app-emacs/dash
app-emacs/dart-mode
app-emacs/jsonrpc
app-emacs/ht"
RDEPEND="app-emacs/lsp-treemacs
app-emacs/lsp-mode
app-emacs/dap-mode
app-emacs/f
app-emacs/dash
app-emacs/dart-mode
app-emacs/jsonrpc
app-emacs/ht"
app-emacs/lsp-treemacs app-emacs/lsp-mode app-emacs/dap-mode app-emacs/f app-emacs/dash app-emacs/dart-mode app-emacs/jsonrpc app-emacs/ht
app-emacs/lsp-treemacs app-emacs/lsp-mode app-emacs/dap-mode app-emacs/f app-emacs/dash app-emacs/dart-mode app-emacs/jsonrpc app-emacs/ht