diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7a17817da4b..0cbd0976ae5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -21,6 +21,7 @@ For more information about this file see also [Keep a Changelog](http://keepacha
     * Model packages `PEcAn.BASGRA`, `PEcAn.CLM45`, `PEcAn.DALEC`, `PEcAn.dvmdostem`, `PEcAn.FATES`, `PEcAn.GDAY`, `PEcAn.JULES`, `PEcAn.LDNDC`, `PEcAn.LINKAGES`, `PEcAn.LPJGUESS`, `PEcAn.MAAT`, `PEcAn.MAESPA`, `PEcAn.PRELES`, `PEcAn.SIBCASA`, `PEcAn.SIPNET`, `PEcAn.STICS`, and the new model package template.
     * Modules `PEcAn.allometry`, `PEcAn.assim.batch`, `PEcAn.data.mining`, `PEcAn.emulator`, `PEcAn.MA`, `PEcAn.photosynthesis`, `PEcAn.priors`, and `PEcAn.RTM`.
 - Renamed master branch to main
+- `PEcAn.all::pecan_version()` now reports commit hashes as well as version numbers for each installed package.
 
 ### Removed
 
diff --git a/Makefile b/Makefile
index 4160b751007..db701ada644 100644
--- a/Makefile
+++ b/Makefile
@@ -67,6 +67,11 @@ drop_parents = $(filter-out $(patsubst %/,%,$(dir $1)), $1)
 # Generates a list of regular files at any depth inside its argument
 files_in_dir = $(call drop_parents, $(call recurse_dir, $1))
 
+# Git hash + clean status for this directory
+git_rev = $(shell \
+	CLEAN=$$([[ -n $$(git status -s $1) ]] && echo "+mod"); \
+	echo $$(git rev-parse --short=10 HEAD)"$$CLEAN")
+
 # HACK: NA vs TRUE switch on dependencies argument is an ugly workaround for
 # a circular dependency between benchmark and data.land.
 # When this is fixed, can go back to simple `dependencies = TRUE`
@@ -74,6 +79,7 @@ depends_R_pkg = ./scripts/time.sh "depends ${1}" ./scripts/confirm_deps.R ${1} \
 	$(if $(findstring modules/benchmark,$(1)),NA,TRUE)
 install_R_pkg = ./scripts/time.sh "install ${1}" Rscript \
 	-e ${SETROPTIONS} \
+	-e "Sys.setenv(PECAN_GIT_REV='$(call git_rev,$1)')" \
 	-e "remotes::install_local('$(strip $(1))', force=TRUE, dependencies=FALSE, upgrade=FALSE)"
 check_R_pkg = ./scripts/time.sh "check ${1}" Rscript scripts/check_with_errors.R $(strip $(1))
 test_R_pkg = ./scripts/time.sh "test ${1}" Rscript \
diff --git a/base/all/NAMESPACE b/base/all/NAMESPACE
index a7e08575d38..150394015c9 100644
--- a/base/all/NAMESPACE
+++ b/base/all/NAMESPACE
@@ -1,3 +1,4 @@
 # Generated by roxygen2: do not edit by hand
 
+S3method(print,pecan_version_report)
 export(pecan_version)
diff --git a/base/all/NEWS.md b/base/all/NEWS.md
index 22b477b0daa..1c4ff017520 100644
--- a/base/all/NEWS.md
+++ b/base/all/NEWS.md
@@ -3,6 +3,10 @@
 ## License change
 * PEcAn.all is now distributed under the BSD three-clause license instead of the NCSA Open Source license.
 
+## Changed
+* `pecan_version()` now reports the Git revision (if known) for each package,
+  and prints its results more compactly for easier reading.
+
 # PEcAn.all 1.8.0
 
 ## Added
diff --git a/base/all/R/pecan_version.R b/base/all/R/pecan_version.R
index 4563a4cfdfd..7d686af6d1f 100644
--- a/base/all/R/pecan_version.R
+++ b/base/all/R/pecan_version.R
@@ -23,9 +23,9 @@
 #' @param exact Show only tags that exactly match `version`,
 #'  or all tags that have it as a substring?
 #' @return data frame with columns for package name, expected version(s),
-#'  and installed version.
-#'  If the `sessioninfo` package is installed, a fourth column reports where
-#'  each package was installed from: local, github, CRAN, etc.
+#'  installed version, and Git hash (if known).
+#'  If the `sessioninfo` package is installed, an additional column reports
+#'  where each package was installed from: local, github, CRAN, etc.
 #'
 #' @examples
 #' pecan_version()
@@ -46,7 +46,7 @@ pecan_version <- function(version = max(PEcAn.all::pecan_releases$version),
     )
     version <- unique(unlist(version))
   }
-  cols_to_return <- c("package", version, "installed")
+  cols_to_return <- c("package", version, "installed", "build_hash")
 
 
   if (requireNamespace("sessioninfo", quietly = TRUE)) {
@@ -94,14 +94,20 @@ pecan_version <- function(version = max(PEcAn.all::pecan_releases$version),
     our_pkgs <- our_pkgs[!duplicated(our_pkgs),]
   }
 
+  want_hash <- !is.na(our_pkgs$installed)
+  our_pkgs$build_hash[want_hash] <- sapply(
+    our_pkgs$package[want_hash],
+    get_buildhash)
 
   res <- merge(
     x = our_pkgs,
     y = PEcAn.all::pecan_version_history,
     all = TRUE)
-  res <- res[, cols_to_return]
+  res <- drop_na_version_rows(res[, cols_to_return])
+  rownames(res) <- res$package
+  class(res) <- c("pecan_version_report", class(res))
 
-  drop_na_version_rows(res)
+  res
 }
 
 # Remove rows where all versions are missing
@@ -110,3 +116,46 @@ drop_na_version_rows <- function(df) {
   stopifnot(colnames(df)[[1]] == "package")
   df[rowSums(is.na(df[, -1])) < ncol(df[, -1]), ]
 }
+
+
+# Look up git revision, if recorded, from an installed PEcAn package
+get_buildhash <- function(pkg) {
+  # Set if pkg was installed from r-universe or via install_github()
+  desc_sha <- utils::packageDescription(pkg, fields = "RemoteSha")
+  if (!is.na(desc_sha)) {
+    return(substr(desc_sha, 1, 10))
+  }
+  # Set if PECAN_GIT_REV was set during install (includes `make install`)
+  get0(".build_hash", envir = asNamespace(pkg), ifnotfound = NA_character_)
+}
+
+
+# print method for version
+# (Just to help it display more compactly)
+#' @export
+print.pecan_version_report <- function(x, ...) {
+
+  dots <- list(...)
+  if (is.null(dots$row.names)) { dots$row.names <- FALSE }
+  if (is.null(dots$right)) { dots$right <- FALSE }
+
+  xx <- as.data.frame(x)
+  # only print hash for dev versions
+  # (typically x.y.z.9000, but we'll use anything with a 4th version component)
+  skip_hash <- is.na(xx$installed[,4]) | is.na(xx$build_hash)
+  xx$build_hash[skip_hash] <- ""
+  xx$build_hash <- sub(".{4}\\+mod$", "+mod", xx$build_hash)
+  xx$installed <- paste0(
+    xx$installed,
+    sub("(.+)", " (\\1)", xx$build_hash))
+  xx$build_hash <- NULL
+  if (!is.null(xx$source)) {
+    xx$source <- paste0(
+      strtrim(xx$source, 17),
+      ifelse(nchar(xx$source, type="width") <= 17, "", "..."))
+  }
+  dots$x <- xx
+  do.call("print", dots)
+
+  invisible(x)
+}
diff --git a/base/all/R/version.R b/base/all/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/base/all/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/base/all/data/pecan_version_history.R b/base/all/data/pecan_version_history.R
index 5e30bcb3460..efff2cdf1ac 100644
--- a/base/all/data/pecan_version_history.R
+++ b/base/all/data/pecan_version_history.R
@@ -1,30 +1,34 @@
 
+# Read and format a list of pecan versions
 
-pecan_version_history <- utils::read.csv(
-  "pecan_version_history.csv",
-  colClasses = "character",
-  check.names = FALSE)
+# The local() wrapper is to avoid adding objects to the package data:
+# Any extra vars defined at the top level of this file would be loaded
+# into the global environment by `data("pecan_version_history")`
 
-# We'd like to parse strictly to catch invalid versions (probably typos).
-# But we _need_ to allow NAs... and in R < 4.4, package_version did not
-# accept NAs unless strict=FALSE.
-strict <- TRUE
-na_version <- try(
-  package_version(NA_character_, strict = strict),
-  silent = TRUE)
-if (inherits(na_version, "try-error")) {
-  strict <- FALSE
-}
+pecan_version_history <- local({
+  pvh <- utils::read.csv(
+    "pecan_version_history.csv",
+    colClasses = "character",
+    check.names = FALSE)
 
-for (col in colnames(pecan_version_history)) {
-  if (col != "package") {
-    pecan_version_history[[col]] <- package_version(
-      pecan_version_history[[col]],
-      strict = strict)
+  # We'd like to parse strictly to catch invalid versions (probably typos).
+  # But we _need_ to allow NAs... and in R < 4.4, package_version did not
+  # accept NAs unless strict=FALSE.
+  strict <- TRUE
+  na_version <- try(
+    package_version(NA_character_, strict = strict),
+    silent = TRUE)
+  if (inherits(na_version, "try-error")) {
+    strict <- FALSE
   }
-}
 
-# Now remove local vars
-# Yes, this really is needed: _all_ objects left defined at end of script
-# will be added to the package data list!
-rm(strict, na_version, col)
+  for (col in colnames(pvh)) {
+    if (col != "package") {
+      pvh[[col]] <- package_version(
+        pvh[[col]],
+        strict = strict)
+    }
+  }
+
+  pvh
+})
diff --git a/base/all/man/pecan_version.Rd b/base/all/man/pecan_version.Rd
index a0275089a9a..1f3c9578b59 100644
--- a/base/all/man/pecan_version.Rd
+++ b/base/all/man/pecan_version.Rd
@@ -14,9 +14,9 @@ or all tags that have it as a substring?}
 }
 \value{
 data frame with columns for package name, expected version(s),
-and installed version.
-If the \code{sessioninfo} package is installed, a fourth column reports where
-each package was installed from: local, github, CRAN, etc.
+installed version, and Git hash (if known).
+If the \code{sessioninfo} package is installed, an additional column reports
+where each package was installed from: local, github, CRAN, etc.
 }
 \description{
 Reports the currently installed or loaded version(s) of each PEcAn package,
diff --git a/base/all/tests/testthat/test-pecan_version.R b/base/all/tests/testthat/test-pecan_version.R
index c1e45b0c267..b66172709a2 100644
--- a/base/all/tests/testthat/test-pecan_version.R
+++ b/base/all/tests/testthat/test-pecan_version.R
@@ -26,7 +26,7 @@ test_that("pecan_version", {
   # tags substring matched only when exact = FALSE
   expect_named(
     pecan_version("v1.5"),
-    c("package", paste0("v1.5.", 0:3), "installed", "source")
+    c("package", paste0("v1.5.", 0:3), "installed", "build_hash", "source")
   )
   expect_error(
     pecan_version("v1.5", exact = TRUE),
@@ -34,14 +34,14 @@ test_that("pecan_version", {
   )
   expect_named(
     pecan_version("v1.3", exact = TRUE),
-    c("package", "v1.3", "installed", "source")
+    c("package", "v1.3", "installed", "build_hash", "source")
   )
 
   # returns current release if no args given
   noargs <- pecan_version()
   expected_tag <- tail(PEcAn.all::pecan_releases, 1)$tag
-  expect_length(noargs, 4)
-  expect_named(noargs, c("package", expected_tag, "installed", "source"))
+  expect_length(noargs, 5)
+  expect_named(noargs, c("package", expected_tag, "installed", "build_hash", "source"))
 
   # Why the `any()`s below?
   # Because R CMD check runs tests with local test dir added to .libPaths,
@@ -77,8 +77,8 @@ test_that("pecan_version without sessioninfo", {
   mockery::stub(pecan_version, 'requireNamespace', FALSE)
   without_sessinfo <- pecan_version()
 
-  expect_length(with_sessinfo, 4)
-  expect_length(without_sessinfo, 3)
+  expect_length(with_sessinfo, 5)
+  expect_length(without_sessinfo, 4)
   expect_equal(
     with_sessinfo[, colnames(with_sessinfo) != "source"],
     without_sessinfo)
@@ -91,3 +91,37 @@ test_that("pecan_version without sessioninfo", {
 # The approach that failed just before I wrote this note:
 # No, the version of PEcAn.all (1.8.1.9000 today) is not reliably in sync with
 # the PEcAn version last tagged as a release (1.7.2 today).
+
+
+test_that("printing", {
+  ver <- structure(
+    data.frame(
+      package = "PEcAnFake",
+      v0.0 = package_version("1.2.3"),
+      installed = package_version("1.2.3.9000"),
+      build_hash = "01234567ab",
+      source = "13 characters"),
+    class = c("pecan_version_report", "data.frame")
+  )
+
+  long_ver <- ver
+  long_ver$build_hash = "01234567ab+mod"
+  long_ver$source =  "twenty-two characters"
+
+  # hash truncated to fit "+mod" if present
+  expect_output(print(ver), "01234567ab", fixed = TRUE)
+  expect_output(print(long_ver), "012345+mod", fixed = TRUE)
+
+  # source truncated to total of 20 chars
+  expect_output(print(ver), "13 characters$")
+  expect_output(print(long_ver), "twenty-two charac...", fixed = TRUE)
+
+  # source truncation works on width not glyph count
+  long_ver$source <- gsub("tw", "\U{1F197}\U{1F192}", long_ver$source)
+  expect_output(print(long_ver), "\U{1F192}o ch...", fixed = TRUE)
+
+  # dots passed on
+  expect_output(print(ver), "\n PEcAnFake")
+  expect_output(print(ver, row.names = TRUE), "\n1 PEcAnFake", fixed = TRUE)
+  expect_output(print(ver, quote = TRUE), "\n \"PEcAnFake\"", fixed = TRUE)
+})
diff --git a/base/db/R/version.R b/base/db/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/base/db/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/base/logger/R/version.R b/base/logger/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/base/logger/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/base/qaqc/R/version.R b/base/qaqc/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/base/qaqc/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/base/remote/R/version.R b/base/remote/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/base/remote/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/base/settings/R/version.R b/base/settings/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/base/settings/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/base/utils/R/version.R b/base/utils/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/base/utils/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/base/visualization/R/version.R b/base/visualization/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/base/visualization/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/base/workflow/R/version.R b/base/workflow/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/base/workflow/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/basgra/R/version.R b/models/basgra/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/basgra/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/biocro/R/version.R b/models/biocro/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/biocro/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/clm45/R/version.R b/models/clm45/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/clm45/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/dalec/R/version.R b/models/dalec/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/dalec/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/dvmdostem/R/version.R b/models/dvmdostem/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/dvmdostem/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/ed/R/version.R b/models/ed/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/ed/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/fates/R/version.R b/models/fates/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/fates/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/gday/R/version.R b/models/gday/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/gday/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/jules/R/version.R b/models/jules/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/jules/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/ldndc/R/version.R b/models/ldndc/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/ldndc/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/linkages/R/version.R b/models/linkages/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/linkages/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/lpjguess/R/version.R b/models/lpjguess/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/lpjguess/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/maat/R/version.R b/models/maat/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/maat/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/maespa/R/version.R b/models/maespa/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/maespa/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/preles/R/version.R b/models/preles/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/preles/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/sibcasa/R/version.R b/models/sibcasa/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/sibcasa/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/sipnet/R/version.R b/models/sipnet/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/sipnet/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/stics/R/version.R b/models/stics/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/stics/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/models/template/R/version.R b/models/template/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/models/template/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/allometry/R/version.R b/modules/allometry/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/allometry/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/assim.batch/R/version.R b/modules/assim.batch/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/assim.batch/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/assim.sequential/R/version.R b/modules/assim.sequential/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/assim.sequential/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/benchmark/R/version.R b/modules/benchmark/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/benchmark/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/data.atmosphere/R/version.R b/modules/data.atmosphere/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/data.atmosphere/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/data.land/R/version.R b/modules/data.land/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/data.land/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/data.remote/R/version.R b/modules/data.remote/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/data.remote/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/emulator/R/version.R b/modules/emulator/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/emulator/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/meta.analysis/R/version.R b/modules/meta.analysis/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/meta.analysis/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/photosynthesis/DESCRIPTION b/modules/photosynthesis/DESCRIPTION
index 2605358e806..e872f23b10f 100644
--- a/modules/photosynthesis/DESCRIPTION
+++ b/modules/photosynthesis/DESCRIPTION
@@ -34,10 +34,6 @@ License: BSD_3_clause + file LICENSE
 Copyright: Authors
 LazyLoad: yes
 LazyData: FALSE
-Collate:
-    fitA.R
-    Licor.QC.R
-    plots.R
 Encoding: UTF-8
 RoxygenNote: 7.3.2
 VignetteBuilder: knitr
diff --git a/modules/photosynthesis/R/version.R b/modules/photosynthesis/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/photosynthesis/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/priors/R/version.R b/modules/priors/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/priors/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/rtm/R/version.R b/modules/rtm/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/rtm/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")
diff --git a/modules/uncertainty/R/version.R b/modules/uncertainty/R/version.R
new file mode 100644
index 00000000000..0e58d885272
--- /dev/null
+++ b/modules/uncertainty/R/version.R
@@ -0,0 +1,3 @@
+# Set at package install time, used by pecan.all::pecan_version()
+# to identify development versions of packages
+.build_hash <- Sys.getenv("PECAN_GIT_REV", "unknown")