diff --git a/doc/guix.texi b/doc/guix.texi
index 7572ab8768..cb6754a4bc 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -6032,7 +6032,7 @@ guix import cpan Acme::Boolean
 @item cran
 @cindex CRAN
 @cindex Bioconductor
-Import metadata from @uref{http://cran.r-project.org/, CRAN}, the
+Import metadata from @uref{https://cran.r-project.org/, CRAN}, the
 central repository for the @uref{http://r-project.org, GNU@tie{}R
 statistical and graphical environment}.
 
@@ -6403,7 +6403,7 @@ the updater for packages hosted on kernel.org;
 @item elpa
 the updater for @uref{http://elpa.gnu.org/, ELPA} packages;
 @item cran
-the updater for @uref{http://cran.r-project.org/, CRAN} packages;
+the updater for @uref{https://cran.r-project.org/, CRAN} packages;
 @item bioconductor
 the updater for @uref{https://www.bioconductor.org/, Bioconductor} R packages;
 @item cpan
diff --git a/gnu/packages/bioinformatics.scm b/gnu/packages/bioinformatics.scm
index 30eae3e0b4..660c7b408b 100644
--- a/gnu/packages/bioinformatics.scm
+++ b/gnu/packages/bioinformatics.scm
@@ -6367,7 +6367,7 @@ track.  The database is exposed as a @code{TxDb} object.")
   (propagated-inputs
    `(("r-rcurl" ,r-rcurl)
      ("r-xml" ,r-xml)))
-  (home-page "http://cran.r-project.org/web/packages/SPARQL")
+  (home-page "https://cran.r-project.org/web/packages/SPARQL")
   (synopsis "SPARQL client for R")
   (description "This package provides an interface to use SPARQL to pose
 SELECT or UPDATE queries to an end-point.")
@@ -6601,7 +6601,7 @@ BLAST, KEGG, GenBank, MEDLINE and GO.")
     (propagated-inputs
       `(("r-ggplot2" ,r-ggplot2)
         ("r-gridextra" ,r-gridextra)))
-    (home-page "http://cran.r-project.org/web/packages/ACSNMineR")
+    (home-page "https://cran.r-project.org/web/packages/ACSNMineR")
     (synopsis "Gene enrichment analysis")
     (description
      "This package provides tools to compute and represent gene set enrichment
@@ -8497,7 +8497,7 @@ factors bound at the specific regions.")
        ("r-rtracklayer" ,r-rtracklayer)
        ("r-s4vectors" ,r-s4vectors)
        ("r-seqinr" ,r-seqinr)))
-    (home-page "http://cran.r-project.org/web/packages/gkmSVM")
+    (home-page "https://cran.r-project.org/web/packages/gkmSVM")
     (synopsis "Gapped-kmer support vector machine")
     (description
      "This R package provides tools for training gapped-kmer SVM classifiers
@@ -9090,7 +9090,7 @@ trait.")
          "047s6007ydc38x8wm027mlb4mngz15n0d4238fr8h43wyll5zy0z"))))
     (properties `((upstream-name . "MALDIquant")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/MALDIquant")
+    (home-page "https://cran.r-project.org/web/packages/MALDIquant")
     (synopsis "Quantitative analysis of mass spectrometry data")
     (description
      "This package provides a complete analysis pipeline for matrix-assisted
@@ -9997,7 +9997,7 @@ interval to data view, mismatch pileup, and several splicing summaries.")
     (propagated-inputs
      `(("r-plyr" ,r-plyr)
        ("r-rcurl" ,r-rcurl)))
-    (home-page "http://cran.r-project.org/web/packages/gProfileR/")
+    (home-page "https://cran.r-project.org/web/packages/gProfileR/")
     (synopsis "Interface to the g:Profiler toolkit")
     (description
      "This package provides tools for functional enrichment analysis,
diff --git a/gnu/packages/cran.scm b/gnu/packages/cran.scm
index 9b80b68984..9359b7f736 100644
--- a/gnu/packages/cran.scm
+++ b/gnu/packages/cran.scm
@@ -42,7 +42,7 @@
        (sha256
         (base32 "0d1ya7hx4y58n5ivwmdmq2zgh0g2sbv7ykh13n85c1355csd57yx"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/colorspace")
+    (home-page "https://cran.r-project.org/web/packages/colorspace")
     (synopsis "Color space manipulation")
     (description
      "This package carries out a mapping between assorted color spaces
@@ -170,7 +170,7 @@ bindings that call a C++ function.")
          "0ripcib2qz0m7rgr1kiz68nx8f6p408l1ww7j78ljqik7p3g41g7"))))
     (properties `((upstream-name . "AUC")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/AUC")
+    (home-page "https://cran.r-project.org/web/packages/AUC")
     (synopsis "Compute the area under the curve of selected measures")
     (description
      "This package includes functions to compute the area under the curve of
@@ -195,7 +195,7 @@ is provided.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-mass" ,r-mass)))
-    (home-page "http://cran.r-project.org/web/packages/calibrate")
+    (home-page "https://cran.r-project.org/web/packages/calibrate")
     (synopsis "Calibration of scatterplot and biplot axes")
     (description
      "This is a package for drawing calibrated scales with tick marks
@@ -214,7 +214,7 @@ on (non-orthogonal) variable vectors in scatterplots and biplots.")
         (base32
          "1v9xp60p813rnx41vchkh32qmcb4z2zp9l7r1a8a6f8aqylnq3vj"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/shape")
+    (home-page "https://cran.r-project.org/web/packages/shape")
     (synopsis "Functions for plotting graphical shapes")
     (description
      "This package provides functions for plotting graphical shapes such as
@@ -308,7 +308,7 @@ approach is used to estimate the lower cut-off for the scaling region.")
         (base32
          "0k9zms930b5dz9gy8414li21wy0zg9x9vp7301v5cvyfi0g7xzgw"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/compare")
+    (home-page "https://cran.r-project.org/web/packages/compare")
     (synopsis "Comparing objects for differences")
     (description
      "This package provides functions to compare a model object to a
@@ -550,7 +550,7 @@ plot networks.")
         (base32
          "15g6dacdmlbkcnimblscghl23aj732cn6qwbs583r4im9v5nvbla"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/proxy")
+    (home-page "https://cran.r-project.org/web/packages/proxy")
     (synopsis "Distance and similarity measures")
     (description
      "This package provides an extensible framework for the efficient
@@ -572,7 +572,7 @@ most popular ones.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-lattice" ,r-lattice)))
-    (home-page "http://cran.r-project.org/web/packages/sp")
+    (home-page "https://cran.r-project.org/web/packages/sp")
     (synopsis "Classes and methods for spatial data")
     (description
      "This package provides classes and methods for spatial data; the classes
@@ -595,7 +595,7 @@ print, summary, etc.")
          "1nn25q4kmh9kj975sxkrpa97vh5irqrlqhwsfinbck6h6ia4rsw1"))))
     (properties `((upstream-name . "RMTstat")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/RMTstat")
+    (home-page "https://cran.r-project.org/web/packages/RMTstat")
     (synopsis "Distributions, statistics and tests derived from random matrix theory")
     (description
      "This package provides functions for working with the Tracy-Widom laws
@@ -710,7 +710,7 @@ or excesses over a high threshold.")
      `(("r-zoo" ,r-zoo)))
     (native-inputs
      `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/lmtest")
+    (home-page "https://cran.r-project.org/web/packages/lmtest")
     (synopsis "Testing linear regression models")
     (description
      "This package provides a collection of tests, data sets, and examples for
@@ -730,7 +730,7 @@ tools for inference in parametric models are provided.")
                (base32
                 "0cf9vya9h4znwgp6s1nayqqmh6mwyw7jl0isk1nx4j2ijszxcd7x"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/inline")
+    (home-page "https://cran.r-project.org/web/packages/inline")
     (synopsis "Functions to inline C, C++, Fortran function calls from R")
     (description
      "This package provides functionality to dynamically define R functions
@@ -755,7 +755,7 @@ and S4 methods with inlined C, C++ or Fortran code supporting @code{.C} and
      `(("r-lattice" ,r-lattice)
        ("r-mass" ,r-mass)
        ("r-numderiv" ,r-numderiv)))
-    (home-page "http://cran.r-project.org/web/packages/bbmle")
+    (home-page "https://cran.r-project.org/web/packages/bbmle")
     (synopsis "Tools for General Maximum Likelihood Estimation")
     (description
      "This package provides methods and functions for fitting maximum
@@ -805,7 +805,7 @@ topics for ecologists (ISBN 978-0-691-12522-0).")
          "13a9ry8xf5j1f2j6imqrxdgxqz3nqp9sj9b4ivyx9sid459irm6m"))))
     (properties `((upstream-name . "lpSolve")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/lpSolve")
+    (home-page "https://cran.r-project.org/web/packages/lpSolve")
     (synopsis "R interface to Lp_solve to solve linear/integer programs")
     (description
      "Lp_solve is software for solving linear, integer and mixed integer
@@ -832,7 +832,7 @@ transportation problems.")
        ("r-mass" ,r-mass)
        ("r-quadprog" ,r-quadprog)))
     (native-inputs `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/limSolve")
+    (home-page "https://cran.r-project.org/web/packages/limSolve")
     (synopsis "Solving linear inverse models")
     (description
      "This package provides functions that:
@@ -891,7 +891,7 @@ data).  Weighted versions of MLE, MME and QME are available.")
     (propagated-inputs
      `(("r-boot" ,r-boot)
        ("r-rcpp" ,r-rcpp)))
-    (home-page "http://cran.r-project.org/web/packages/energy")
+    (home-page "https://cran.r-project.org/web/packages/energy")
     (synopsis "Multivariate inference via the energy of data")
     (description
      "This package provides e-statistics (energy) tests and statistics for
@@ -918,7 +918,7 @@ statistics/methods are implemented.")
          "1ffx8wigqqvz2pnh06jjc0fnf4vq9z2rhwk2y3f9aszn18ap3dgw"))))
     (properties `((upstream-name . "SuppDists")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/SuppDists")
+    (home-page "https://cran.r-project.org/web/packages/SuppDists")
     (synopsis "Supplementary distributions")
     (description
      "This package provides ten distributions supplementing those built into
@@ -944,7 +944,7 @@ George Marsaglia are included.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-suppdists" ,r-suppdists)))
-    (home-page "http://cran.r-project.org/web/packages/kSamples")
+    (home-page "https://cran.r-project.org/web/packages/kSamples")
     (synopsis "K-Sample rank tests and their combinations")
     (description
      "This package provides tools to compares k samples using the
@@ -973,7 +973,7 @@ samples.")
     (propagated-inputs
      `(("r-kernlab" ,r-kernlab)
        ("r-matrix" ,r-matrix)))
-    (home-page "http://cran.r-project.org/web/packages/CVST")
+    (home-page "https://cran.r-project.org/web/packages/CVST")
     (synopsis "Fast cross-validation via sequential testing")
     (description
      "This package implements the fast cross-validation via sequential
@@ -1027,7 +1027,7 @@ variable models.")
      `(("r-cvst" ,r-cvst)
        ("r-kernlab" ,r-kernlab)
        ("r-matrix" ,r-matrix)))
-    (home-page "http://cran.r-project.org/web/packages/DRR")
+    (home-page "https://cran.r-project.org/web/packages/DRR")
     (synopsis "Dimensionality reduction via regression")
     (description
      "This package provides an implementation of dimensionality reduction via
@@ -1051,7 +1051,7 @@ regression using Kernel Ridge Regression.")
        ("r-lava" ,r-lava)
        ("r-rcpp" ,r-rcpp)
        ("r-survival" ,r-survival)))
-    (home-page "http://cran.r-project.org/web/packages/prodlim")
+    (home-page "https://cran.r-project.org/web/packages/prodlim")
     (synopsis "Product-limit estimation for censored event history analysis")
     (description
      "This package provides a fast and user-friendly implementation of
@@ -1123,7 +1123,7 @@ calendar objects.")
        ("r-sfsmisc" ,r-sfsmisc)))
     (native-inputs
      `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/ddalpha")
+    (home-page "https://cran.r-project.org/web/packages/ddalpha")
     (synopsis "Depth-Based classification and calculation of data depth")
     (description
      "This package contains procedures for depth-based supervised learning,
@@ -1172,7 +1172,7 @@ Core algorithms are executed in parallel on systems supporting OpenMP.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-rcpp" ,r-rcpp)))
-    (home-page "http://cran.r-project.org/web/packages/RcppRoll")
+    (home-page "https://cran.r-project.org/web/packages/RcppRoll")
     (synopsis "Efficient rolling and windowed operations")
     (description
      "This package provides fast and efficient routines for common rolling /
@@ -1200,7 +1200,7 @@ provided.")
        ("r-prodlim" ,r-prodlim)
        ("r-rpart" ,r-rpart)
        ("r-survival" ,r-survival)))
-    (home-page "http://cran.r-project.org/web/packages/ipred")
+    (home-page "https://cran.r-project.org/web/packages/ipred")
     (synopsis "Improved predictors")
     (description
      "This package provides improved predictive models by indirect
@@ -1225,7 +1225,7 @@ problems as well as resampling based estimators of prediction error.")
        ("r-lattice" ,r-lattice)
        ("r-mnormt" ,r-mnormt)
        ("r-nlme" ,r-nlme)))
-    (home-page "http://cran.r-project.org/web/packages/psych/")
+    (home-page "https://cran.r-project.org/web/packages/psych/")
     (synopsis "Procedures for psychological, psychometric, and personality research")
     (description
      "This package provides a general purpose toolbox for personality,
@@ -1456,7 +1456,7 @@ imputations.")
         (base32
          "1qac05z50618y4bw1d7yznsli1bv82s0g8h37iacrjrdkv87bmy7"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/truncnorm/")
+    (home-page "https://cran.r-project.org/web/packages/truncnorm/")
     (synopsis "Truncated normal distribution")
     (description "This package provides functions for the truncated normal
 distribution with mean equal to @code{mean} and standard deviation equal to
@@ -1479,7 +1479,7 @@ functions, as well as a random generation function.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-truncnorm" ,r-truncnorm)))
-    (home-page "http://cran.r-project.org/web/packages/Rsolnp/")
+    (home-page "https://cran.r-project.org/web/packages/Rsolnp/")
     (synopsis "General non-linear optimization")
     (description "The Rsolnp package implements a general non-linear augmented
 Lagrange multiplier method solver, a @dfn{sequential quadratic
@@ -1654,7 +1654,7 @@ where possible.")
     (propagated-inputs
      `(("r-boot" ,r-boot)
        ("r-mass" ,r-mass)))
-    (home-page "http://cran.r-project.org/web/packages/laeken/")
+    (home-page "https://cran.r-project.org/web/packages/laeken/")
     (synopsis "Estimation of indicators on social exclusion and poverty")
     (description "This package provides tools for the estimation of indicators
 on social exclusion and poverty, as well as an implementation of Pareto tail
@@ -1677,7 +1677,7 @@ modeling for empirical income distributions.")
      `(("r-colorspace" ,r-colorspace)
        ("r-lmtest" ,r-lmtest)
        ("r-mass" ,r-mass)))
-    (home-page "http://cran.r-project.org/web/packages/vcd/")
+    (home-page "https://cran.r-project.org/web/packages/vcd/")
     (synopsis "Visualizing categorical data")
     (description "This package provides visualization techniques, data sets,
 summary and inference procedures aimed particularly at categorical data.
@@ -1699,7 +1699,7 @@ Analysis with R\" by Michael Friendly and David Meyer (2015).")
         (base32
          "1bkl4a72l0k6gm82l3jxnib898z20cw17zg81jj39l9dn65rlmcq"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/ica/")
+    (home-page "https://cran.r-project.org/web/packages/ica/")
     (synopsis "Independent component analysis")
     (description "This package provides tools for @dfn{Independent Component
 Analysis} (ICA) using various algorithms: FastICA,
@@ -1766,7 +1766,7 @@ statistics, etc.")
         (base32
          "0ababcj87kx7860mica9y2ydlhskxmgj9n46crx036cila512jc2"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/scatterplot3d/")
+    (home-page "https://cran.r-project.org/web/packages/scatterplot3d/")
     (synopsis "3D scatter plot")
     (description "This package provides an implementation of scatter plots for
 plotting.  a three dimensional point cloud.")
diff --git a/gnu/packages/machine-learning.scm b/gnu/packages/machine-learning.scm
index c8bd5d7747..dbd2af1ea4 100644
--- a/gnu/packages/machine-learning.scm
+++ b/gnu/packages/machine-learning.scm
@@ -492,7 +492,7 @@ in terms of new algorithms.")
        ("r-rcpparmadillo" ,r-rcpparmadillo)))
     (inputs
      `(("armadillo" ,armadillo)))
-    (home-page "http://cran.r-project.org/web/packages/AdaptiveSparsity")
+    (home-page "https://cran.r-project.org/web/packages/AdaptiveSparsity")
     (synopsis "Adaptive sparsity models")
     (description
      "This package implements the Figueiredo machine learning algorithm for
@@ -512,7 +512,7 @@ geometric models.")
         (base32
          "0qnaq9x3j2xc6jrmmd98wc6hkzch487s4p3a9lnc00xvahkhgpmr"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/kernlab")
+    (home-page "https://cran.r-project.org/web/packages/kernlab")
     (synopsis "Kernel-based machine learning tools")
     (description
      "This package provides kernel-based machine learning methods for
diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index b1a497c36b..e8c7707408 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -1885,7 +1885,7 @@ sparse system of linear equations A x = b using Guassian elimination.")
     (build-system r-build-system)
     (native-inputs
      `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/quadprog")
+    (home-page "https://cran.r-project.org/web/packages/quadprog")
     (synopsis "Functions to solve quadratic programming problems")
     (description
      "This package contains routines and documentation for solving quadratic
@@ -1904,7 +1904,7 @@ programming problems.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-quadprog" ,r-quadprog)))
-    (home-page "http://cran.r-project.org/web/packages/pracma")
+    (home-page "https://cran.r-project.org/web/packages/pracma")
     (synopsis "Practical numerical math functions")
     (description "This package provides functions for numerical analysis and
 linear algebra, numerical optimization, differential equations, plus some
diff --git a/gnu/packages/statistics.scm b/gnu/packages/statistics.scm
index f92f6d3904..7fb125cad1 100644
--- a/gnu/packages/statistics.scm
+++ b/gnu/packages/statistics.scm
@@ -305,7 +305,7 @@ available, greatly increasing its breadth and scope.")
         (base32
          "0ai1qpm0p4z07xr0dvag8sdn9jrxcwanrsk9khzmww094jvr1jxd"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/boot")
+    (home-page "https://cran.r-project.org/web/packages/boot")
     (synopsis "Bootstrap functions for R")
     (description
      "This package provides functions and datasets for bootstrapping from the
@@ -371,7 +371,7 @@ k-nearest neighbour, Learning Vector Quantization and Self-Organizing Maps.")
     (build-system r-build-system)
     (inputs
      `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/cluster")
+    (home-page "https://cran.r-project.org/web/packages/cluster")
     (synopsis "Methods for cluster analysis")
     (description
      "This package provides methods for cluster analysis.  It is a much
@@ -391,7 +391,7 @@ Hubert, based on Kaufman and Rousseeuw (1990) \"Finding Groups in Data\".")
         (base32
          "0h7sjmvvsi35041jp47cxhsqzgf1y8jrw6fxii7n26i8g7nrh1sf"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/codetools")
+    (home-page "https://cran.r-project.org/web/packages/codetools")
     (synopsis "Code analysis tools for R")
     (description "This package provides code analysis tools for R to check R
 code for possible problems.")
@@ -410,7 +410,7 @@ code for possible problems.")
         (base32
          "0s1lxmd85dd0kxx8hwk02w9l7pmpk4bpy7787fbyh2dbq5g9ys0k"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/foreign")
+    (home-page "https://cran.r-project.org/web/packages/foreign")
     (synopsis "Read data stored by other statistics software")
     (description
      "This package provides functions for reading and writing data stored by
@@ -433,7 +433,7 @@ for reading and writing some dBase files.")
     (build-system r-build-system)
     (inputs
      `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/KernSmooth")
+    (home-page "https://cran.r-project.org/web/packages/KernSmooth")
     (synopsis "Functions for kernel smoothing")
     (description
      "This package provides functions for kernel smoothing (and density
@@ -500,7 +500,7 @@ and operations on them using LAPACK and SuiteSparse.")
      `(("r-lattice" ,r-lattice)))
     (native-inputs
      `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/nlme")
+    (home-page "https://cran.r-project.org/web/packages/nlme")
     (synopsis "Linear and nonlinear mixed effects models")
     (description
      "This package provides tools to fit and compare Gaussian linear and
@@ -522,7 +522,7 @@ nonlinear mixed-effects models.")
    (propagated-inputs
     `(("r-matrix" ,r-matrix)
       ("r-nlme" ,r-nlme)))
-   (home-page "http://cran.r-project.org/web/packages/mgcv")
+   (home-page "https://cran.r-project.org/web/packages/mgcv")
    (synopsis "Mixed generalised additive model computation")
    (description
     "GAMs, GAMMs and other generalized ridge regression with multiple smoothing
@@ -562,7 +562,7 @@ single hidden layer, and for multinomial log-linear models.")
         (base32
          "165djqj7lk81jr7z5fwccq3h7ayys26hx1kj9hndvg2rkyaq1arq"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/rpart")
+    (home-page "https://cran.r-project.org/web/packages/rpart")
     (synopsis "Recursive partitioning and regression trees")
     (description
      "This package provides recursive partitioning functions for
@@ -693,7 +693,7 @@ caching.")
        (sha256
         (base32 "1l8db1nk29ccqg3mkbafvfiw0775iq4gapysf88xq2zp6spiw59i"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/dichromat")
+    (home-page "https://cran.r-project.org/web/packages/dichromat")
     (synopsis "Color schemes for dichromats")
     (description
      "Dichromat collapses red-green or green-blue distinctions to simulate the
@@ -741,7 +741,7 @@ OpenSSL should be used.")
                (base32
                 "13b80bpnbrarazjvnpnk91ljjsqgfm2fm3gy66aj09cmmsmv199h"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/estimability")
+    (home-page "https://cran.r-project.org/web/packages/estimability")
     (synopsis "Tools for assessing estimability of linear predictions")
     (description "Provides tools for determining estimability of linear
 functions of regression coefficients, and 'epredict' methods that handle
@@ -765,7 +765,7 @@ non-estimable cases correctly.")
        ("r-rcolorbrewer" ,r-rcolorbrewer)
        ("r-scales" ,r-scales)))
     (home-page
-     "http://cran.r-project.org/web/packages/pheatmap")
+     "https://cran.r-project.org/web/packages/pheatmap")
     (synopsis "Pretty heatmaps")
     (description
      "This package provides an implementation of heatmaps that offers more
@@ -783,7 +783,7 @@ control over dimensions and appearance.")
        (sha256
         (base32 "13sk7zrrrzry6ky1bp8mmnzcl9jhvkig8j4id9nny7z993mnk00d"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/labeling")
+    (home-page "https://cran.r-project.org/web/packages/labeling")
     (synopsis "Axis labeling algorithms")
     (description "The labeling package provides a range of axis labeling
 algorithms.")
@@ -800,7 +800,7 @@ algorithms.")
        (sha256
         (base32 "1s1ar6rag8m277qcqmdp02gn4awn9bdj9ax0r8s32i59mm1mki05"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/magrittr/index.html")
+    (home-page "https://cran.r-project.org/web/packages/magrittr/index.html")
     (synopsis "A forward-pipe operator for R")
     (description
      "Magrittr provides a mechanism for chaining commands with a new
@@ -823,7 +823,7 @@ see package vignette.  To quote Rene Magritte, \"Ceci n'est pas un pipe.\"")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-colorspace" ,r-colorspace)))
-    (home-page "http://cran.r-project.org/web/packages/munsell")
+    (home-page "https://cran.r-project.org/web/packages/munsell")
     (synopsis "Munsell colour system")
     (description
      "The Munsell package contains Functions for exploring and using the
@@ -904,7 +904,7 @@ prototype-based, rather than class-based object oriented ideas.")
        (sha256
         (base32 "1pfcl8z1pnsssfaaz9dvdckyfnnc6rcq56dhislbf571hhg7isgk"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/RColorBrewer")
+    (home-page "https://cran.r-project.org/web/packages/RColorBrewer")
     (synopsis "ColorBrewer palettes")
     (description
      "This package provides color schemes for maps (and other graphics)
@@ -928,7 +928,7 @@ designed by Cynthia Brewer as described at http://colorbrewer2.org")
     (propagated-inputs
      `(("r-base64enc" ,r-base64enc)))
     (home-page
-     "http://cran.r-project.org/web/packages/sendmailR")
+     "https://cran.r-project.org/web/packages/sendmailR")
     (synopsis "Send email using R")
     (description
      "This package contains a simple SMTP client which provides a portable
@@ -1112,7 +1112,7 @@ agnes cluster diagrams.")
      `(("cairo" ,cairo)))
     (propagated-inputs
      `(("r-withr" ,r-withr)))
-    (home-page "http://cran.r-project.org/web/packages/gdtools")
+    (home-page "https://cran.r-project.org/web/packages/gdtools")
     (synopsis "Utilities for graphical rendering")
     (description
      "The @code{gdtools} package provides functionalities to get font metrics
@@ -1668,7 +1668,7 @@ features require SQL translation to be provided by the package author.")
     (build-system r-build-system)
     (inputs
      `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/acepack")
+    (home-page "https://cran.r-project.org/web/packages/acepack")
     (synopsis "Functions for regression transformations")
     (description
      "This package provides ACE and AVAS methods for choosing regression
@@ -1688,7 +1688,7 @@ transformations.")
          "0ad49bzip1zqmpj1d8jajwl4bd81fm3k6dq8p26x6mvlzc04dvwd"))))
     (properties `((upstream-name . "Formula")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/Formula")
+    (home-page "https://cran.r-project.org/web/packages/Formula")
     (synopsis "Extended model formulas")
     (description
      "This package provides a new class @code{Formula}, which extends the base
@@ -1711,7 +1711,7 @@ side.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-lattice" ,r-lattice)))
-    (home-page "http://cran.r-project.org/web/packages/locfit")
+    (home-page "https://cran.r-project.org/web/packages/locfit")
     (synopsis "Local regression, likelihood and density estimation")
     (description
      "This package provides functions used for local regression, likelihood
@@ -1729,7 +1729,7 @@ and density estimation.")
                (base32
                 "05aznigw9nwv3hbwjnjbvqhfjqkwsw2csgrjx8500gzr2fvla5w8"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/chron")
+    (home-page "https://cran.r-project.org/web/packages/chron")
     (synopsis "Chronological R objects which can handle dates and times")
     (description
      "This package provides chronological R objects which can handle dates and
@@ -1890,7 +1890,7 @@ inference for statistical models.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-lattice" ,r-lattice)))
-    (home-page "http://cran.r-project.org/web/packages/coda")
+    (home-page "https://cran.r-project.org/web/packages/coda")
     (synopsis "This is a package for Output Analysis and Diagnostics for MCMC")
     (description "This package provides functions for summarizing and plotting
 the output from Markov Chain Monte Carlo (MCMC) simulations, as well as
@@ -2021,7 +2021,7 @@ limited to R.")
         (base32
          "0mml9h3xagi7144pyb3jj9zbh9qzns7izkhdg7df20v7bikr6nz8"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/backports")
+    (home-page "https://cran.r-project.org/web/packages/backports")
     (synopsis "Reimplementations of functions introduced since R 3.0.0")
     (description
      "Provides implementations of functions which have been introduced in R
@@ -2141,7 +2141,7 @@ SLURM and Sun Grid Engine.  Multicore and SSH systems are also supported.")
                (base32
                 "1vghazbcha8gvkwwcdagjvzx6yl8zm7kgr0i9wxr4jng06d1l3fp"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/brew")
+    (home-page "https://cran.r-project.org/web/packages/brew")
     (synopsis "Templating framework for report generation")
     (description
      "The brew package implements a templating framework for mixing text and R
@@ -2186,7 +2186,7 @@ other packages.")
         (base32
          "1vb8r9khpvcf0q7acv8rsplfjjwcll302bg5kp596cvn6aacypl6"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/commonmark")
+    (home-page "https://cran.r-project.org/web/packages/commonmark")
     (synopsis "CommonMark and Github Markdown Rendering in R")
     (description
      "The CommonMark specification defines a rationalized version of markdown
@@ -2317,7 +2317,7 @@ pure C implementation of the Git core methods.")
                (base32
                 "133s75q2hr6jg28m1wvs96qrbc9c4vw87migwhkjqb88xxvbqhd5"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/rstudioapi")
+    (home-page "https://cran.r-project.org/web/packages/rstudioapi")
     (synopsis "Safely access the RStudio API")
     (description
      "This package provides functions to access the RStudio API and provide
@@ -2428,7 +2428,7 @@ disk (or a connection).")
                (base32
                 "0rw81n9p3d2i03b4pgcfj5blryc94f29bm9a4j9bnp5h8qjj6pry"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/plotrix")
+    (home-page "https://cran.r-project.org/web/packages/plotrix")
     (synopsis "Various plotting functions")
     (description
      "This package provides lots of plotting, various labeling, axis and color
@@ -2446,7 +2446,7 @@ scaling functions for R.")
                (base32
                 "09jzw4rzwf2y5lcz7b16mb68pn0fqigv34ff7lr6w3yi9k91i1xy"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/gridBase")
+    (home-page "https://cran.r-project.org/web/packages/gridBase")
     (synopsis "Integration of base and grid graphics")
     (description
      "This package provides an integration of base and grid graphics for R.")
@@ -2517,7 +2517,7 @@ the header files from the templated Armadillo library.")
                (base32
                 "176nr5wpnkavn5z0yy9f7d47l37ndnn2w3gv854xav8nnybi6wwv"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/bitops")
+    (home-page "https://cran.r-project.org/web/packages/bitops")
     (synopsis "Bitwise operations")
     (description
      "This package provides functions for bitwise operations on integer
@@ -2538,7 +2538,7 @@ vectors.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-bitops" ,r-bitops)))
-    (home-page "http://cran.r-project.org/web/packages/caTools")
+    (home-page "https://cran.r-project.org/web/packages/caTools")
     (synopsis "Various tools including functions for moving window statistics")
     (description
      "This package contains several basic utility functions including:
@@ -2778,7 +2778,7 @@ offers access to an XPath \"interpreter\".")
                "1mwx302576rmsjllbq2clfxilm3hkyp5bw0wmwqbn0kgv5wpy8z6"))))
     (properties (quasiquote ((upstream-name . "XNomial"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/XNomial")
+    (home-page "https://cran.r-project.org/web/packages/XNomial")
     (synopsis "Goodness-of-Fit test for multinomial data")
     (description
      "This package provides an exact Goodness-of-Fit test for
@@ -2806,7 +2806,7 @@ plotted and compared with the asymptotic curve.")
                 "0vql32np716dpd0kjn7s7wgawd02ysgp2a5il4kb19nlw661ii3x"))))
     (properties `((upstream-name . "lambda.r")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/lambda.r")
+    (home-page "https://cran.r-project.org/web/packages/lambda.r")
     (synopsis "Functional programming extension for R")
     (description
      "This package provides a language extension to efficiently write
@@ -2828,7 +2828,7 @@ safety.")
     (properties
      `((upstream-name . "futile.options")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/futile.options")
+    (home-page "https://cran.r-project.org/web/packages/futile.options")
     (synopsis "Options management framework")
     (description
      "The futile.options subsystem provides an easy user-defined options
@@ -2852,7 +2852,7 @@ options defined in other packages.")
     (propagated-inputs
      `(("r-futile-options" ,r-futile-options)
        ("r-lambda-r" ,r-lambda-r)))
-    (home-page "http://cran.r-project.org/web/packages/futile.logger")
+    (home-page "https://cran.r-project.org/web/packages/futile.logger")
     (synopsis "Logging utility for R")
     (description
      "This package provides a simple yet powerful logging utility.  Based
@@ -2873,7 +2873,7 @@ statements.")
         (base32
          "0nrik5fyq59hwiwjcpbi4p5yfavgfjq6wyrynhkrbm4k6v1g1wlq"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/segmented")
+    (home-page "https://cran.r-project.org/web/packages/segmented")
     (synopsis "Regression models with breakpoints estimation")
     (description
      "Given a regression model, segmented updates the model by adding one or
@@ -2892,7 +2892,7 @@ multiple breakpoints are allowed.")
                (base32
                 "1mxbrkpnmq32x4wd0194d541661yvfrrjlr3lsf7qq53ms3h21zf"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/snow")
+    (home-page "https://cran.r-project.org/web/packages/snow")
     (synopsis "Support for simple parallel computing in R")
     (description
      "The snow package provides support for simple parallel computing on a
@@ -2937,7 +2937,7 @@ standard R subsetting and Kronecker products.")
         (base32
          "16sycjq912ix52fjxjhcwiaqr0yj1v5iqmrvjljd3z857031w06y"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/iterators")
+    (home-page "https://cran.r-project.org/web/packages/iterators")
     (synopsis "Iterator construct for R")
     (description
      "This package provides support for iterators, which allow a programmer to
@@ -2960,7 +2960,7 @@ data.")
     (propagated-inputs
      `(("r-codetools" ,r-codetools)
        ("r-iterators" ,r-iterators)))
-    (home-page "http://cran.r-project.org/web/packages/foreach")
+    (home-page "https://cran.r-project.org/web/packages/foreach")
     (synopsis "Foreach looping construct for R")
     (description
      "This package provides support for the @code{foreach} looping construct.
@@ -2989,7 +2989,7 @@ parallel.")
     (propagated-inputs
      `(("r-foreach" ,r-foreach)
        ("r-iterators" ,r-iterators)))
-    (home-page "http://cran.r-project.org/web/packages/doParallel")
+    (home-page "https://cran.r-project.org/web/packages/doParallel")
     (synopsis "Foreach parallel adaptor for the 'parallel' package")
     (description
      "This package provides a parallel backend for the @code{%dopar%} function
@@ -3012,7 +3012,7 @@ using the parallel package.")
     (propagated-inputs
      `(("r-foreach" ,r-foreach)
        ("r-iterators" ,r-iterators)))
-    (home-page "http://cran.r-project.org/web/packages/doMC")
+    (home-page "https://cran.r-project.org/web/packages/doMC")
     (synopsis "Foreach parallel adaptor for the 'parallel' package")
     (description
      "This package provides a parallel backend for the @code{%dopar%} function
@@ -3085,7 +3085,7 @@ flexible than the orphaned \"base64\" package.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-matrix" ,r-matrix)))
-    (home-page "http://cran.r-project.org/web/packages/irlba")
+    (home-page "https://cran.r-project.org/web/packages/irlba")
     (synopsis "Methods for eigendecomposition of large matrices")
     (description
      "This package provides fast and memory efficient methods for truncated
@@ -3158,7 +3158,7 @@ options and registries, vignette, unit test and bibtex related utilities.")
          (base32
           "1yqfl1g6vsl28zn8brzc39659k8lqsmfms7900j7p64ilydyb2sx"))))
      (build-system r-build-system)
-     (home-page "http://cran.r-project.org/web/packages/registry")
+     (home-page "https://cran.r-project.org/web/packages/registry")
      (synopsis "Infrastructure for R package registries")
      (description
       "This package provides a generic infrastructure for creating and using R
@@ -3229,7 +3229,7 @@ Stochastic Neighbor Embedding using a Barnes-Hut implementation.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-class" ,r-class)))
-    (home-page "http://cran.r-project.org/web/packages/e1071")
+    (home-page "https://cran.r-project.org/web/packages/e1071")
     (synopsis "Miscellaneous functions for probability theory")
     (description
      "This package provides functions for latent class analysis, short time
@@ -3250,7 +3250,7 @@ computation, bagged clustering, naive Bayes classifier, and more.")
     (properties
      `((upstream-name . "bigmemory.sri")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/bigmemory.sri")
+    (home-page "https://cran.r-project.org/web/packages/bigmemory.sri")
     (synopsis "Shared resource interface for the bigmemory package")
     (description "This package provides a shared resource interface for the
 bigmemory and synchronicity packages.")
@@ -3357,7 +3357,7 @@ performing parallel computations on multicore machines.")
                 "11z6v2i7jl647wxi9p5z66yvfnnqv6s7fxqmz7w2gkb6j8wl1f24"))))
     (properties `((upstream-name . "R.methodsS3")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/R.methodsS3")
+    (home-page "https://cran.r-project.org/web/packages/R.methodsS3")
     (synopsis "S3 methods simplified")
     (description
      "This package provides methods that simplify the setup of S3 generic
@@ -3583,7 +3583,7 @@ the 'lite' version of the more complete @code{viridis} package.")
        ("r-purrr" ,r-purrr)
        ("r-rcpp" ,r-rcpp)
        ("r-rlang" ,r-rlang)))
-    (home-page "http://cran.r-project.org/web/packages/tidyselect")
+    (home-page "https://cran.r-project.org/web/packages/tidyselect")
     (synopsis "Select from a set of strings")
     (description
      "This package provides a backend for the selecting functions of the
@@ -3865,7 +3865,7 @@ following problems:
     (build-system r-build-system)
     (propagated-inputs
      `(("r-openssl" ,r-openssl)))
-    (home-page "http://cran.r-project.org/web/packages/base64")
+    (home-page "https://cran.r-project.org/web/packages/base64")
     (synopsis "Base64 encoder and decoder")
     (description
      "This package is a compatibility wrapper to replace the orphaned package
@@ -3929,7 +3929,7 @@ conversion of R objects to LaTeX code, and recoding variables.")
          "1jqr871jkll2xmk7wk5hv1z3a36hyn2ibgivw7bwk4b346940xlx"))))
     (properties `((upstream-name . "RUnit")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/RUnit")
+    (home-page "https://cran.r-project.org/web/packages/RUnit")
     (synopsis "R unit test framework")
     (description
      "This package provides R functions implementing a standard unit testing
@@ -4015,7 +4015,7 @@ existing packages provide.")
         (base32
          "0jzmbywlyzfxs7hlmyd0iynghfc9qp5sa5lnhr73y8r360yv1ahf"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/sfsmisc")
+    (home-page "https://cran.r-project.org/web/packages/sfsmisc")
     (synopsis "Utilities from \"Seminar fuer Statistik\" ETH Zurich")
     (description
      "This package provides useful utilities from Seminar fuer Statistik ETH
@@ -4034,7 +4034,7 @@ Zurich, including many that are related to graphics.")
         (base32
          "1xknwk9xlsj027pg0nwiizigcrsc84hdrig0jn0cgcyxj8dabdl6"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/gtools")
+    (home-page "https://cran.r-project.org/web/packages/gtools")
     (synopsis "Various R programming tools")
     (description
      "This package contains a collection of various functions to assist in R
@@ -4060,7 +4060,7 @@ tests for whether a value is missing, empty or contains only @code{NA} and
      `(("perl" ,perl)))
     (propagated-inputs
      `(("r-gtools" ,r-gtools)))
-    (home-page "http://cran.r-project.org/web/packages/gdata")
+    (home-page "https://cran.r-project.org/web/packages/gdata")
     (synopsis "Various R programming tools for data manipulation")
     (description
      "This package provides various R programming tools for data manipulation,
@@ -4101,7 +4101,7 @@ including:
        ("r-gdata" ,r-gdata)
        ("r-gtools" ,r-gtools)
        ("r-kernsmooth" ,r-kernsmooth)))
-    (home-page "http://cran.r-project.org/web/packages/gplots")
+    (home-page "https://cran.r-project.org/web/packages/gplots")
     (synopsis "Various R programming tools for plotting data")
     (description
      "This package provides various R programming tools for plotting data,
@@ -4185,7 +4185,7 @@ series of numeric vectors/matrices and factors.")
                (base32
                 "1jfqnqy9544gfvz3bsb48v4177nwp4b4n9l2743asq8sbq305b5r"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/ztable")
+    (home-page "https://cran.r-project.org/web/packages/ztable")
     (synopsis "Zebra-striped tables in LaTeX and HTML formats for R")
     (description
      "This package provides functions to make zebra-striped tables (tables
@@ -4206,7 +4206,7 @@ with alternating row colors) in LaTeX and HTML formats easily from
                (base32
                 "112gc0d7f8iavgf56pnzfxb7hy75yhd0zlyjzshdcfbnqcd2a6bx"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/vipor")
+    (home-page "https://cran.r-project.org/web/packages/vipor")
     (synopsis "Plot categorical data using noise and density estimates")
     (description
      "This package provides tools to generate a violin point plot, a
@@ -4245,7 +4245,7 @@ closely-packed, non-overlapping points.")
         (base32
          "0l8c6fql82cb246qh7hfgxb4s35qn0qfgy6dzvkx0zkz1cpqvx69"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/sourcetools")
+    (home-page "https://cran.r-project.org/web/packages/sourcetools")
     (synopsis "Tools for reading, tokenizing and parsing R code")
     (description
      "The sourcetools package provides both an R and C++ interface for the
@@ -4312,7 +4312,7 @@ Wall Street Journal, among others.  This package also provides
                (base32
                 "07v4x8af60alcw6vbiwf5fp25bhra61kvxz9kqx64lszm0i1fb4x"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/statmod")
+    (home-page "https://cran.r-project.org/web/packages/statmod")
     (native-inputs
      `(("gfortran" ,gfortran)))
     (synopsis "Statistical modeling")
@@ -4388,7 +4388,7 @@ published by the statistics blog FiveThirtyEight.")
          "1i30hrqdk64q17vsn918c3q79brchgx2wzh1gbsgbn0dh1ncabq4"))))
     (properties `((upstream-name . "CompQuadForm")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/CompQuadForm")
+    (home-page "https://cran.r-project.org/web/packages/CompQuadForm")
     (synopsis "Distribution function of quadratic forms in normal variables")
     (description
      "This package provides functions to compute the distribution function of
@@ -4437,7 +4437,7 @@ letters, as is often required for scientific publications.")
      `(("r-mass" ,r-mass)
        ("r-segmented" ,r-segmented)
        ("r-survival" ,r-survival)))
-    (home-page "http://cran.r-project.org/web/packages/mixtools")
+    (home-page "https://cran.r-project.org/web/packages/mixtools")
     (synopsis "Tools for analyzing finite mixture models")
     (description
      "This package provides a collection of R functions for analyzing finite
@@ -4483,7 +4483,7 @@ regression.")
          "108z2ymby5y4h8l4l2krqwm28rya93gq09yylgilnm3afvfrfabg"))))
     (properties `((upstream-name . "fastICA")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/fastICA")
+    (home-page "https://cran.r-project.org/web/packages/fastICA")
     (synopsis "FastICA algorithms to perform ICA and projection pursuit")
     (description
      "This package provides an implementation of the FastICA algorithm to
@@ -4525,7 +4525,7 @@ forest of trees using random inputs, for classification and regression.")
         (base32
          "06xnc5gv1284ll0addxnxb6ljz6fn8dbyrp5vchyz6551h800aa6"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/diptest")
+    (home-page "https://cran.r-project.org/web/packages/diptest")
     (synopsis "Hartigan's dip test statistic for unimodality")
     (description
      "This package computes Hartigan's dip test statistic for unimodality,
@@ -4545,7 +4545,7 @@ original public code has been corrected.")
         (base32
          "0ynds453xprxv0jqqzi3blnv5w6vrdww9pvd1sq4lrr5ar3k3cq7"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/modeltools")
+    (home-page "https://cran.r-project.org/web/packages/modeltools")
     (synopsis "Tools and classes for statistical models")
     (description
      "This package provides a collection of tools to deal with statistical
@@ -4569,7 +4569,7 @@ to change in the future.")
      `(("r-lattice" ,r-lattice)
        ("r-modeltools" ,r-modeltools)
        ("r-nnet" ,r-nnet)))
-    (home-page "http://cran.r-project.org/web/packages/flexmix")
+    (home-page "https://cran.r-project.org/web/packages/flexmix")
     (synopsis "Flexible mixture modeling")
     (description
      "This package implements a general framework for finite mixtures of
@@ -4639,7 +4639,7 @@ data for species delimitation, nearest neighbor based noise detection.")
          "1vz546hyjyhly70z62h5n3mn62b8llhhmim8ffp9y6jnnb0i2sc4"))))
     (properties `((upstream-name . "DEoptimR")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/DEoptimR")
+    (home-page "https://cran.r-project.org/web/packages/DEoptimR")
     (synopsis "Differential evolution optimization in pure R")
     (description
      "This package provides a differential evolution (DE) stochastic
@@ -4687,7 +4687,7 @@ regression methodology including model selections and multivariate statistics.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-mvtnorm" ,r-mvtnorm)))
-    (home-page "http://cran.r-project.org/web/packages/pcaPP")
+    (home-page "https://cran.r-project.org/web/packages/pcaPP")
     (synopsis "Robust PCA by projection pursuit")
     (description
      "This package provides functions for robust @dfn{principal component
@@ -4714,7 +4714,7 @@ analysis} (PCA) by projection pursuit.")
        ("r-robustbase" ,r-robustbase)))
     (native-inputs
      `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/rrcov")
+    (home-page "https://cran.r-project.org/web/packages/rrcov")
     (synopsis "Scalable robust estimators with high breakdown Point")
     (description
      "This package provides an implementation of robust location and scatter
@@ -4736,7 +4736,7 @@ estimation and robust multivariate analysis with high breakdown point.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-lattice" ,r-lattice)))
-    (home-page "http://cran.r-project.org/web/packages/fit.models")
+    (home-page "https://cran.r-project.org/web/packages/fit.models")
     (synopsis "Compare fitted models")
     (description
      "The @code{fit.models} function and its associated methods (coefficients, print,
@@ -4769,7 +4769,7 @@ generally.")
        ("r-rrcov" ,r-rrcov)))
     (native-inputs
      `(("gfortran" ,gfortran)))
-    (home-page "http://cran.r-project.org/web/packages/robust")
+    (home-page "https://cran.r-project.org/web/packages/robust")
     (synopsis "Port of the S+ \"Robust Library\"")
     (description
      "This package is a port of the S+ \"Robust Library\".  It provides
@@ -4789,7 +4789,7 @@ multivariate analysis.")
         (base32
          "0lsgbg93hm0w1rdb813ry0ks2l0jfpyqzqkf3h3bj6fch0avcbv2"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/trimcluster")
+    (home-page "https://cran.r-project.org/web/packages/trimcluster")
     (synopsis "Cluster analysis with trimming")
     (description
      "The trimmed k-means clustering method by Cuesta-Albertos, Gordaliza and
@@ -4822,7 +4822,7 @@ of the points.")
        ("r-prabclus" ,r-prabclus)
        ("r-robustbase" ,r-robustbase)
        ("r-trimcluster" ,r-trimcluster)))
-    (home-page "http://cran.r-project.org/web/packages/fpc")
+    (home-page "https://cran.r-project.org/web/packages/fpc")
     (synopsis "Flexible procedures for clustering")
     (description
      "This package provides various methods for clustering and cluster validation.
@@ -4890,7 +4890,7 @@ showing the progress is useful e.g. bootstrap.")
          "1kncmiaraq1mrykb9fj3fsxswabk3l71fnp1vks0x9aay5xfk8mj"))))
     (properties `((upstream-name . "FNN")))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/FNN")
+    (home-page "https://cran.r-project.org/web/packages/FNN")
     (synopsis "Fast nearest neighbor search algorithms and applications")
     (description
      "This package provides cover-tree and kd-tree fast k-nearest neighbor
@@ -4961,7 +4961,7 @@ decompositions of such matrices, and solutions of linear systems.")
     (build-system r-build-system)
     (propagated-inputs
      `(("r-rcpp" ,r-rcpp)))
-    (home-page "http://cran.r-project.org/web/packages/ModelMetrics")
+    (home-page "https://cran.r-project.org/web/packages/ModelMetrics")
     (synopsis "Rapid calculation of model metrics")
     (description
      "Written in C++ using @code{Rcpp}, this package provides a collection of
@@ -5034,7 +5034,7 @@ expected shortfall risk are also included.")
      `(("pkg-config" ,pkg-config)))
     (inputs
      `(("nlopt" ,nlopt)))
-    (home-page "http://cran.r-project.org/web/packages/nloptr")
+    (home-page "https://cran.r-project.org/web/packages/nloptr")
     (synopsis "R interface to NLopt")
     (description
      "This package is interface to NLopt, a library for nonlinear
@@ -5066,7 +5066,7 @@ algorithms.")
        ("r-nloptr" ,r-nloptr)
        ("r-mass" ,r-mass)
        ("r-nlme" ,r-nlme)))
-    (home-page "http://cran.r-project.org/web/packages/lme4")
+    (home-page "https://cran.r-project.org/web/packages/lme4")
     (synopsis "Linear mixed-effects models using eigen and S4")
     (description
       "This package provides fit linear and generalized linear mixed-effects
@@ -5262,7 +5262,7 @@ multivariate case.")
        ("r-mclust" ,r-mclust)
        ("r-mvtnorm" ,r-mvtnorm)
        ("r-sn" ,r-sn)))
-    (home-page "http://cran.r-project.org/web/packages/tclust")
+    (home-page "https://cran.r-project.org/web/packages/tclust")
     (synopsis "Robust trimmed clustering")
     (description
      "This package implements different robust clustering
@@ -5364,7 +5364,7 @@ is supported.")
      `(("r-rcpp" ,r-rcpp)
        ("r-stringr" ,r-stringr)))
     (home-page
-     "http://cran.r-project.org/web/packages/lubridate")
+     "https://cran.r-project.org/web/packages/lubridate")
     (synopsis "Make dealing with dates a little easier")
     (description
      "This package provides functions to work with date-times and time-spans:
diff --git a/gnu/packages/web.scm b/gnu/packages/web.scm
index 54f210873e..a31801f7b4 100644
--- a/gnu/packages/web.scm
+++ b/gnu/packages/web.scm
@@ -3844,7 +3844,7 @@ directory.")
     (propagated-inputs
      `(("r-digest" ,r-digest)
        ("r-rcpp" ,r-rcpp)))
-    (home-page "http://cran.r-project.org/web/packages/htmltools")
+    (home-page "https://cran.r-project.org/web/packages/htmltools")
     (synopsis "R tools for HTML")
     (description
      "This package provides tools for HTML generation and output in R.")
@@ -3959,7 +3959,7 @@ callback or connection interfaces.")
         (base32
          "0arjsz854rfkfqhgvpqbm9lfni97dcjs66isdsfvwfd2wz932dbb"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/hwriter")
+    (home-page "https://cran.r-project.org/web/packages/hwriter")
     (synopsis "Output R objects in HTML format")
     (description
      "This package provides easy-to-use and versatile functions to output R
@@ -3978,7 +3978,7 @@ objects in HTML format.")
         (base32
          "1vzjyvf57k1fjizlk28rby65y5lsww5qnfvgnhln74qwda7hvl3p"))))
     (build-system r-build-system)
-    (home-page "http://cran.r-project.org/web/packages/rjson")
+    (home-page "https://cran.r-project.org/web/packages/rjson")
     (synopsis "JSON library for R")
     (description
      "This package provides functions to convert R objects into JSON objects
@@ -5424,7 +5424,7 @@ files).  It currently supports linked brushing and filtering.")
     (properties `((upstream-name . "Rook")))
     (build-system r-build-system)
     (propagated-inputs `(("r-brew" ,r-brew)))
-    (home-page "http://cran.r-project.org/web/packages/Rook")
+    (home-page "https://cran.r-project.org/web/packages/Rook")
     (synopsis "Web server interface for R")
     (description
      "This package contains the Rook specification and convenience software