Install this version:
emerge -a =app-emacs/projectile-rails-20261001.756
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =app-emacs/projectile-rails-20261001.756
Or alternatively:
emerge --autounmask-write -a =app-emacs/projectile-rails-20261001.756
# automatically generated by g-sorcery
# please do not edit this file
EAPI=8
REPO_URI="https://melpa.org/packages/"
SOURCE_TYPE="tar"
REALNAME="projectile-rails"
DIGEST_SOURCES="yes"
inherit g-sorcery gs-elpa
DESCRIPTION="Minor mode for Rails projects based on projectile-mode"
HOMEPAGE="https://github.com/asok/projectile-rails"
SRC_URI="${REPO_URI}${REALNAME}-${PV}.${SUFFIX}"
SLOT="0"
KEYWORDS="~amd64 ~x86"
DEPEND="app-emacs/projectile
app-emacs/inflections
app-emacs/inf-ruby
app-emacs/f
app-emacs/rake
app-emacs/dash"
RDEPEND="app-emacs/projectile
app-emacs/inflections
app-emacs/inf-ruby
app-emacs/f
app-emacs/rake
app-emacs/dash"
app-emacs/projectile app-emacs/inflections app-emacs/inf-ruby app-emacs/f app-emacs/rake app-emacs/dash
app-emacs/projectile app-emacs/inflections app-emacs/inf-ruby app-emacs/f app-emacs/rake app-emacs/dash