diff --git a/renv.lock b/renv.lock
index 9612bda42..8d30ce136 100644
--- a/renv.lock
+++ b/renv.lock
@@ -1,6 +1,6 @@
 {
   "R": {
-    "Version": "4.1.0",
+    "Version": "4.2.1",
     "Repositories": [
       {
         "Name": "CRAN",
@@ -9,139 +9,24 @@
     ]
   },
   "Packages": {
-    "R.cache": {
-      "Package": "R.cache",
-      "Version": "0.15.0",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "e92a8ea8388c47c82ed8aa435ed3be50",
-      "Requirements": [
-        "R.methodsS3",
-        "R.oo",
-        "R.utils",
-        "digest"
-      ]
-    },
-    "R.methodsS3": {
-      "Package": "R.methodsS3",
-      "Version": "1.8.1",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "4bf6453323755202d5909697b6f7c109",
-      "Requirements": []
-    },
-    "R.oo": {
-      "Package": "R.oo",
-      "Version": "1.24.0",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "5709328352717e2f0a9c012be8a97554",
-      "Requirements": [
-        "R.methodsS3"
-      ]
-    },
-    "R.utils": {
-      "Package": "R.utils",
-      "Version": "2.11.0",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "a7ecb8e60815c7a18648e84cd121b23a",
-      "Requirements": [
-        "R.methodsS3",
-        "R.oo"
-      ]
-    },
     "R6": {
       "Package": "R6",
       "Version": "2.5.1",
       "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "470851b6d5d0ac559e9d01bb352b4021",
-      "Requirements": []
-    },
-    "Rcpp": {
-      "Package": "Rcpp",
-      "Version": "1.0.8.3",
-      "Source": "Repository",
       "Repository": "RSPM",
-      "Hash": "32e79b908fda56ee57fe518a8d37b864",
-      "Requirements": []
-    },
-    "brew": {
-      "Package": "brew",
-      "Version": "1.0-7",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "38875ea52350ff4b4c03849fc69736c8",
+      "Hash": "470851b6d5d0ac559e9d01bb352b4021",
       "Requirements": []
     },
-    "callr": {
-      "Package": "callr",
-      "Version": "3.7.0",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "461aa75a11ce2400245190ef5d3995df",
-      "Requirements": [
-        "R6",
-        "processx"
-      ]
-    },
     "cli": {
       "Package": "cli",
-      "Version": "3.2.0",
+      "Version": "3.3.0",
       "Source": "Repository",
       "Repository": "RSPM",
-      "Hash": "1bdb126893e9ce6aae50ad1d6fc32faf",
+      "Hash": "23abf173c2b783dcc43379ab9bba00ee",
       "Requirements": [
         "glue"
       ]
     },
-    "codetools": {
-      "Package": "codetools",
-      "Version": "0.2-18",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "019388fc48e48b3da0d3a76ff94608a8",
-      "Requirements": []
-    },
-    "commonmark": {
-      "Package": "commonmark",
-      "Version": "1.8.0",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "2ba81b120c1655ab696c935ef33ea716",
-      "Requirements": []
-    },
-    "cpp11": {
-      "Package": "cpp11",
-      "Version": "0.4.2",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "fa53ce256cd280f468c080a58ea5ba8c",
-      "Requirements": []
-    },
-    "crayon": {
-      "Package": "crayon",
-      "Version": "1.5.1",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "8dc45fd8a1ee067a92b85ef274e66d6a",
-      "Requirements": []
-    },
-    "cyclocomp": {
-      "Package": "cyclocomp",
-      "Version": "1.1.0",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "53cbed70a2f7472d48fb6aef08442f25",
-      "Requirements": [
-        "callr",
-        "crayon",
-        "desc",
-        "remotes",
-        "withr"
-      ]
-    },
     "desc": {
       "Package": "desc",
       "Version": "1.4.1",
@@ -154,64 +39,6 @@
         "rprojroot"
       ]
     },
-    "digest": {
-      "Package": "digest",
-      "Version": "0.6.29",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "cf6b206a045a684728c3267ef7596190",
-      "Requirements": []
-    },
-    "docopt": {
-      "Package": "docopt",
-      "Version": "0.7.1",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "e9eeef7931ee99ca0093f3f20b88e09b",
-      "Requirements": []
-    },
-    "ellipsis": {
-      "Package": "ellipsis",
-      "Version": "0.3.2",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "bb0eec2fe32e88d9e2836c2f73ea2077",
-      "Requirements": [
-        "rlang"
-      ]
-    },
-    "evaluate": {
-      "Package": "evaluate",
-      "Version": "0.15",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "699a7a93d08c962d9f8950b2d7a227f1",
-      "Requirements": []
-    },
-    "fansi": {
-      "Package": "fansi",
-      "Version": "1.0.3",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "83a8afdbe71839506baa9f90eebad7ec",
-      "Requirements": []
-    },
-    "fs": {
-      "Package": "fs",
-      "Version": "1.5.2",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "7c89603d81793f0d5486d91ab1fc6f1d",
-      "Requirements": []
-    },
-    "git2r": {
-      "Package": "git2r",
-      "Version": "0.30.1",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "e0c6a04a3e7b90e64213d09128f74f1b",
-      "Requirements": []
-    },
     "glue": {
       "Package": "glue",
       "Version": "1.6.2",
@@ -220,240 +47,6 @@
       "Hash": "4f2596dfb05dac67b9dc558e5c6fba2e",
       "Requirements": []
     },
-    "here": {
-      "Package": "here",
-      "Version": "1.0.1",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "24b224366f9c2e7534d2344d10d59211",
-      "Requirements": [
-        "rprojroot"
-      ]
-    },
-    "highr": {
-      "Package": "highr",
-      "Version": "0.9",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "8eb36c8125038e648e5d111c0d7b2ed4",
-      "Requirements": [
-        "xfun"
-      ]
-    },
-    "hunspell": {
-      "Package": "hunspell",
-      "Version": "3.0.1",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "3987784c19192ad0f2261c456d936df1",
-      "Requirements": [
-        "Rcpp",
-        "digest"
-      ]
-    },
-    "jsonlite": {
-      "Package": "jsonlite",
-      "Version": "1.8.0",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "d07e729b27b372429d42d24d503613a0",
-      "Requirements": []
-    },
-    "knitr": {
-      "Package": "knitr",
-      "Version": "1.38",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "10b3dc3c6acb925910edda5d0543b3a2",
-      "Requirements": [
-        "evaluate",
-        "highr",
-        "stringr",
-        "xfun",
-        "yaml"
-      ]
-    },
-    "lazyeval": {
-      "Package": "lazyeval",
-      "Version": "0.2.2",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "d908914ae53b04d4c0c0fd72ecc35370",
-      "Requirements": []
-    },
-    "lifecycle": {
-      "Package": "lifecycle",
-      "Version": "1.0.1",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "a6b6d352e3ed897373ab19d8395c98d0",
-      "Requirements": [
-        "glue",
-        "rlang"
-      ]
-    },
-    "lintr": {
-      "Package": "lintr",
-      "Version": "2.0.1.9000",
-      "Source": "GitHub",
-      "RemoteType": "github",
-      "RemoteUsername": "jimhester",
-      "RemoteRepo": "lintr",
-      "RemoteRef": "HEAD",
-      "RemoteSha": "f1643b7430a769947a862c4cd37d0e930bd32f50",
-      "RemoteHost": "api.github.com",
-      "Hash": "f6d145857522ca89bfd8e3ca87139b60",
-      "Requirements": [
-        "codetools",
-        "crayon",
-        "cyclocomp",
-        "digest",
-        "glue",
-        "jsonlite",
-        "knitr",
-        "rex",
-        "xml2",
-        "xmlparsedata"
-      ]
-    },
-    "magrittr": {
-      "Package": "magrittr",
-      "Version": "2.0.3",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "7ce2733a9826b3aeb1775d56fd305472",
-      "Requirements": []
-    },
-    "pillar": {
-      "Package": "pillar",
-      "Version": "1.7.0",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "51dfc97e1b7069e9f7e6f83f3589c22e",
-      "Requirements": [
-        "cli",
-        "crayon",
-        "ellipsis",
-        "fansi",
-        "glue",
-        "lifecycle",
-        "rlang",
-        "utf8",
-        "vctrs"
-      ]
-    },
-    "pkgconfig": {
-      "Package": "pkgconfig",
-      "Version": "2.0.3",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "01f28d4278f15c76cddbea05899c5d6f",
-      "Requirements": []
-    },
-    "pkgload": {
-      "Package": "pkgload",
-      "Version": "1.2.4",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "7533cd805940821bf23eaf3c8d4c1735",
-      "Requirements": [
-        "cli",
-        "crayon",
-        "desc",
-        "rlang",
-        "rprojroot",
-        "rstudioapi",
-        "withr"
-      ]
-    },
-    "processx": {
-      "Package": "processx",
-      "Version": "3.5.3",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "8bbae1a548d0d3fdf6647bdd9d35bf6d",
-      "Requirements": [
-        "R6",
-        "ps"
-      ]
-    },
-    "ps": {
-      "Package": "ps",
-      "Version": "1.6.0",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "32620e2001c1dce1af49c49dccbb9420",
-      "Requirements": []
-    },
-    "purrr": {
-      "Package": "purrr",
-      "Version": "0.3.4",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "97def703420c8ab10d8f0e6c72101e02",
-      "Requirements": [
-        "magrittr",
-        "rlang"
-      ]
-    },
-    "rematch2": {
-      "Package": "rematch2",
-      "Version": "2.1.2",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "76c9e04c712a05848ae7a23d2f170a40",
-      "Requirements": [
-        "tibble"
-      ]
-    },
-    "remotes": {
-      "Package": "remotes",
-      "Version": "2.4.2",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "227045be9aee47e6dda9bb38ac870d67",
-      "Requirements": []
-    },
-    "rex": {
-      "Package": "rex",
-      "Version": "1.2.1",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "ae34cd56890607370665bee5bd17812f",
-      "Requirements": [
-        "lazyeval"
-      ]
-    },
-    "rlang": {
-      "Package": "rlang",
-      "Version": "1.0.2",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "04884d9a75d778aca22c7154b8333ec9",
-      "Requirements": []
-    },
-    "roxygen2": {
-      "Package": "roxygen2",
-      "Version": "7.1.2",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "eb9849556c4250305106e82edae35b72",
-      "Requirements": [
-        "R6",
-        "brew",
-        "commonmark",
-        "cpp11",
-        "desc",
-        "digest",
-        "knitr",
-        "pkgload",
-        "purrr",
-        "rlang",
-        "stringi",
-        "stringr",
-        "xml2"
-      ]
-    },
     "rprojroot": {
       "Package": "rprojroot",
       "Version": "2.0.3",
@@ -461,147 +54,6 @@
       "Repository": "RSPM",
       "Hash": "1de7ab598047a87bba48434ba35d497d",
       "Requirements": []
-    },
-    "rstudioapi": {
-      "Package": "rstudioapi",
-      "Version": "0.13",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "06c85365a03fdaf699966cc1d3cf53ea",
-      "Requirements": []
-    },
-    "spelling": {
-      "Package": "spelling",
-      "Version": "2.2",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "b8c899a5c83f0d897286550481c91798",
-      "Requirements": [
-        "commonmark",
-        "hunspell",
-        "knitr",
-        "xml2"
-      ]
-    },
-    "stringi": {
-      "Package": "stringi",
-      "Version": "1.7.6",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "bba431031d30789535745a9627ac9271",
-      "Requirements": []
-    },
-    "stringr": {
-      "Package": "stringr",
-      "Version": "1.4.0",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "0759e6b6c0957edb1311028a49a35e76",
-      "Requirements": [
-        "glue",
-        "magrittr",
-        "stringi"
-      ]
-    },
-    "styler": {
-      "Package": "styler",
-      "Version": "1.7.0.9001",
-      "Source": "GitHub",
-      "RemoteType": "github",
-      "RemoteUsername": "r-lib",
-      "RemoteRepo": "styler",
-      "RemoteRef": "HEAD",
-      "RemoteSha": "ee4731481490616631a25ffd0b0c82f63804cd87",
-      "RemoteHost": "api.github.com",
-      "Hash": "c4c1c243a8668365dd436be9139636b6",
-      "Requirements": [
-        "R.cache",
-        "cli",
-        "magrittr",
-        "purrr",
-        "rematch2",
-        "rlang",
-        "rprojroot",
-        "tibble",
-        "withr"
-      ]
-    },
-    "tibble": {
-      "Package": "tibble",
-      "Version": "3.1.6",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "8a8f02d1934dfd6431c671361510dd0b",
-      "Requirements": [
-        "ellipsis",
-        "fansi",
-        "lifecycle",
-        "magrittr",
-        "pillar",
-        "pkgconfig",
-        "rlang",
-        "vctrs"
-      ]
-    },
-    "utf8": {
-      "Package": "utf8",
-      "Version": "1.2.2",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "c9c462b759a5cc844ae25b5942654d13",
-      "Requirements": []
-    },
-    "vctrs": {
-      "Package": "vctrs",
-      "Version": "0.4.0",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "95c2573b232eac82df562f9e300f9790",
-      "Requirements": [
-        "cli",
-        "glue",
-        "rlang"
-      ]
-    },
-    "withr": {
-      "Package": "withr",
-      "Version": "2.5.0",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "c0e49a9760983e81e55cdd9be92e7182",
-      "Requirements": []
-    },
-    "xfun": {
-      "Package": "xfun",
-      "Version": "0.30",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "e83f48136b041845e50a6658feffb197",
-      "Requirements": []
-    },
-    "xml2": {
-      "Package": "xml2",
-      "Version": "1.3.3",
-      "Source": "Repository",
-      "Repository": "CRAN",
-      "Hash": "40682ed6a969ea5abfd351eb67833adc",
-      "Requirements": []
-    },
-    "xmlparsedata": {
-      "Package": "xmlparsedata",
-      "Version": "1.0.5",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "45e4bf3c46476896e821fc0a408fb4fc",
-      "Requirements": []
-    },
-    "yaml": {
-      "Package": "yaml",
-      "Version": "2.3.5",
-      "Source": "Repository",
-      "Repository": "RSPM",
-      "Hash": "458bb38374d73bf83b1bb85e353da200",
-      "Requirements": []
     }
   }
 }
diff --git a/renv/activate.R b/renv/activate.R
index 99b70024f..f958df789 100644
--- a/renv/activate.R
+++ b/renv/activate.R
@@ -54,7 +54,7 @@ local({
   # mask 'utils' packages, will come first on the search path
   library(utils, lib.loc = .Library)
 
-  # unload renv if it's already been laoded
+  # unload renv if it's already been loaded
   if ("renv" %in% loadedNamespaces())
     unloadNamespace("renv")
 
@@ -314,9 +314,18 @@ local({
     }
   
     # bail if it doesn't exist
-    if (!file.exists(tarball))
+    if (!file.exists(tarball)) {
+  
+      # let the user know we weren't able to honour their request
+      fmt <- "* RENV_BOOTSTRAP_TARBALL is set (%s) but does not exist."
+      msg <- sprintf(fmt, tarball)
+      warning(msg)
+  
+      # bail
       return()
   
+    }
+  
     fmt <- "* Bootstrapping with tarball at path '%s'."
     msg <- sprintf(fmt, tarball)
     message(msg)
@@ -800,7 +809,7 @@ local({
   
     # find strings in the JSON
     pattern <- '["](?:(?:\\\\.)|(?:[^"\\\\]))*?["]'
-    locs <- gregexpr(pattern, text)[[1]]
+    locs <- gregexpr(pattern, text, perl = TRUE)[[1]]
   
     # if any are found, replace them with placeholders
     replaced <- text