try

Author: jarochi

setup-environment.R

@@ -1,5 +1,5 @@
 install.packages(c("rmarkdown", "tidyverse", "DT", "slickR", "RCurl", "openalexR",
                    "leaflet", "fontawesome", "hrbrthemes", "ggalt", "ggbeeswarm",
                    "ggalt", "patchwork", "RColorBrewer", "ggthemes", 
-                   "gapminder", "tidygeocoder", "plotly"))
-
+                   "gapminder", "tidygeocoder", "plotly", "devtools"))
+devtools::install_github("hrbrmstr/ggalt")